[KEYS] -TagetingScience P1

Unit Materials and 3 Sounds KYE WpCihcaatnut raearnmeytathhkieengssooinuunntddhsse?? Wihnatthyteooyupsicsoteuer?rethdinogs Indicators 1. Explain the observable properties of materials (single material and multiple materials) used for making objects, based on evidences. (Standard SC 2.1 G. 1/1) 2. Identify the materials used for making objects and classify materials by their observable properties. (Standard SC 2.1 G. 1/2) 3. Describe how sounds are made and the direction they travel based on evidences. (Standard SC 2.3 G. 1/1)

1Lesson What Are Objects Made of? Learning Outcomes • Identify what materials are used for making objects. Vocabulary • Explain the observable properties of the materials used for making objects. • Sort the materials by their observable properties. Read and Think Along toy thing material gWlahsasetsamreadtheeo3f? isThme asdeecoonf dplgalsatsisc. KYE Do you know what materials are used for making objects? 97Materials and Sounds

1 Types and Properties of Materials Objects are toys and things around us. They look different in shape. They can be made of the same or different matter, such as wood, iron, paper, and rubber. We call the matter materials. How are toys and things KYE different? Let’s Try This! Draw lines to match the objects to the materials they are made of. 12 34 Glass Stone Plastic Fabric 98

1. Types of Materials There are many types of materials, such as fabric, paper, metal, glass, wood, and plastic, used for making objects. Are objects and materials different? How? 1Science Process Skills Science Process Skills Enhancing Activity Types of Materials Observing Classifying Inferring Objective: To observe and identify the materials Interpreting data and making conclusions used for making objects KYE Question: What materials are used for making objects? Predict the answer: There are many types of materials used for making objects,....................................................................................................................................................................................................................... such as fabric, rubber, plastic, metal, and wood........................................................................................................................................................................................................................ What to Prepare 1. A book 2. A clear glass 3. An eraser 4. A pumice stone 5. A key 6. A pencil sharpener 7. A wooden chair 8. A pair of sneakers Step by Step 1. Work in groups of 3-4. Observe the objects to see what they are made of and how many types of materials are used to make them. 2. Record your group’s findings in the table. Discuss and sum up the result. 99Materials and Sounds

Record Your Data Observing what the objects are made of Object Material mHaotewrimamlasaknainyrgetyiutp?seesd ofof r 1. Book Paper 1…………………………………………………………………………. …………………………………………………………………………. 2. Eraser Rubber 1…………………………………………………………………………. …………………………………………………………………………. 3. Key Metal 1…………………………………………………………………………. …………………………………………………………………………. 4. Pumice stone Stone 1…………………………………………………………………………. …………………………………………………………………………. 5. Pencil sharpener Plastic and metal 2…………………………………………………………………………. …………………………………………………………………………. 6. Wooden chair Wood and metal 2…………………………………………………………………………. …………………………………………………………………………. KYE 7. Sneakers Fabric and rubber 2…………………………………………………………………………. …………………………………………………………………………. 8. Clear glass Glass 1…………………………………………………………………………. …………………………………………………………………………. Sum It Up! We found that the objects are made of different materials, such as wood, rubber, and metal . Some objects are made of one type of material ..........……….………......................…..................................... .........……….………......................…..................................... Some objects are made of .many types of materials.........……….………......................…..................................... We learned that some objects are made of one type of material but some are made of many types of materials. Different types of materials are useful for different jobs. 100

Materials are the matter used for making objects like toys and many things. Here are some examples of the materials. Wood Rubber cWuotoindtocosmheeestsfroomr ptireeceess.that were Rubber is a flexible matter made tfrhoemjutihcee ijsuictuernoefdruinbtboerrutbrebeesr.sThheeents, to make objects. KYE Metals Rocks Metals come from rocks called ores. Rocks are the surface of the Earth. Tinhtoeyschaenetbseohredartaewdnanoduthainmtomwerireed. Wrocekdsi.gTohrebyloawreupbmrookeunntainintos tsomgaeltl pieces and used in buildings, roads, containers, and many other things. 101Materials and Sounds

Paper Plastics bPeacpoemr eiss mpaapdeer fbroymcutrtetiensg. iWt oinotod Plastics are made from crude oil and chips, blending it into wood pulp, natural gases by chemical processes. bmoaikliinngg,itaindtdoinsghecehtse.micals, and Tmhaeknin,g tohbejecptlsa.stics are used for KYE Fabrics Glass Fabrics are made from fibers. Some Glass is made by melting sand at fabrics are made from natural fibers vbeerymhaigdhe teinmtopetrhaitnugress.ofGldaisffserceannt such as silk and wool. Some are shapes such as bottles. made from synthetic fibers such as nylon. 102

Objects around us are made of different materials. Tishwmisoacodldoe.seotf Tishifmsabacrduicert.aoinf isThpmisaapbdeoer.ookf iTshmgislaamsdseir.roorf Tmhaisdclevaayfsr.oemis KYE Tishimms eahtdaaenl.dolef isTpmhlaisasdtbieca.lol f ScFieanctce Materials can be divided into 2 groups: natural and man- made materials. • Natural materials are those such as wood, rock, rubber, and clay. • Man-made materials are those such as metal, plastic, and paper. 103Materials and Sounds

We can see that some objects are made of one type of material but some are made of many types of materials. KYE mSaodmoefeomfoambtjeearnciytaslsta.yrpees Tarheesrmeuabbdbaeelrlo.froonms Tmhaaisdnedhaofiarfbcmrliicep.taisl mSaodme emofaotobenjereicatlts.ypaereof scoisTfshmopisrlaespstaiatsilcira.monafdde mTahdies voaf sgelaisss. mTahdies otafbwleooisd. 104

2. Properties of Materials We use different materials to make different objects. Some materials look and feel alike and do the same job. But, some look and feel different and do different jobs. What materials look, feel, and do is called properties. What properties of materials can we observe? 2Science Process Skills Science Process Skills Enhancing Activity Observing Classifying Properties of Materials Inferring Objective: To observe and explain the properties of materials KYE Question: Do different materials have different properties? Predict the answer: No, sometimes different materials have similar properties........................................................................................................................................................................................................................ What to Prepare 1. A balloon 2. A marble Note: Other available objects can be used instead. Step by Step 1. Work in groups of 3-4. Each group is given a balloon and a marble. 2. Observe them to see what they are made of. Observe what the properties, such as color, shape, and feel, of the materials are. 3. Record your group’s findings in the table. Discuss and sum up the result. 105Materials and Sounds

Record Your Data Observing the properties of materials Object Properties of the materials you can observe Color Shape Feel 1. Balloon The result varies.................................................................... The result varies.................................................................... Smooth and soft.................................................................... It is made from depending on the.................................................................... depending on the.................................................................... object used in the.................................................................... object used in the.................................................................... .................................................................... rubber............................................................ activity..................................................................... activity..................................................................... .................................................................... .................................................................... .................................................................... .................................................................... .................................................................... .................................................................... .................................................................... .................................................................... 2. Marble The result varies.................................................................... Round.................................................................... Smooth and hard.................................................................... depending on the.................................................................... .................................................................... .................................................................... .................................................................... .................................................................... object used in the.................................................................... .................................................................... .................................................................... activity.KYE .................................................................... .................................................................... .................................................................... It is made of .................................................................... .................................................................... .................................................................... glass............................................................ .................................................................... Sum It Up! We found that the 2 objects are made of different types of materials. The balloon and the marble feel , but they aresmooth.........……….………......................…..................................... different in .color, shape, and feel.........……….………......................…..................................... We learned that some materials have the same properties but some have different properties, such as color, shape, and feel. 106

These are some materials that have the same and different properties. These are balloons. These are towels. Material: rubber Material: fabric Color: red, orange, and pink Color: pink and red Shape: oval Shape: rectangular Feel: smooth and soft Feel: rough but soft Can they stretch? Can they stretch? Yes, they can. No, they cannot. This is a glass. KYE Material: glass Color: clear Shape: cylindrical Feel: smooth and hard Can they stretch? No, they cannot. 107Materials and Sounds

Materials have the same and different properties. Objects have the same properties as the materials used for making them. That is why materials are used in different jobs. Wood Properties of wood KYE • Strong, lasts long, and does not rust • Not stretchy • Does not let heat go through it easily, but can be burned • Decays if soaked in water for a long time Rocks Properties of rocks • Heavy and do not rust • Not stretchy • Feel hard, smooth, or rough • Do not let heat and electricity go through them easily 108

Paper Properties of paper • In the form of light, thin sheets • Not stretchy • Feels smooth • Can be burned and torn easily • Becomes weak easily when getting wet Rubber Properties of rubber • Stretchy • Feels soft, smooth, or rough KYE • Does not let water, heat, and electricity go through it easily Metals Properties of metals • Strong, lasts long, and shiny • Not stretchy • Feel smooth • Rust when getting wet • Let heat and electricity go through them easily 109Materials and Sounds

Plastics Properties of plastics • Lightweight • Not stretchy • Feel smooth and hard • Do not let water, heat, and electricity go through them easily Fabrics Properties of fabrics • Lightweight • Not or a little bit stretchy • Feel soft KYE • Can be folded • Hold water well, but do not let heat go through them easily Glass Properties of glass • Hard and transparent • Not stretchy • Its smooth surface is difficult to scratch and can reflect light. • Breaks easily if falling • Does not let heat go through it easily 110

FEuxeelr-cuipse 1 1 Look at the pictures. Fill in the blanks. 1. This is a balloon................................................................................................. 2. This is a pair of scissors................................................................................................. KYE It is ✓ a toy a thing. It is a toy ✓ a thing. It is made from 1................ material(s), It is made from 2................ material(s), which is/are rubber.......................................................................... which is/are metal and plastic.......................................................................... ................................................................................................................................... ................................................................................................................................... 3. This is a hammer................................................................................................. 4. This is a sock................................................................................................. It is a toy ✓ a thing. It is a toy ✓ a thing. It is made from 2................ material(s), It is made from 1................ material(s), which is/are metal and wood.......................................................................... which is/are fabric.......................................................................... .................................................................................................................................... ................................................................................................................................... 111Materials and Sounds

2 Look at the pictures. Describe the properties of the materials that you can observe. 1. This is a clock.…………………………………………………………………… The properties of its materials are Color: brown………………………………………………………………………. Feel: smooth and hard………………………………………………………………………. Stretch? …N……o…,…i…t……d…o…e…s……n…o…t.……………………. KYE 2. They are tires.…………………………………………………………… The properties of their materials are Color: black………………………………………………………………………. Feel: rough and soft………………………………………………………………………. Stretch? Yes, they do.……………………………………………………………. 3. This is a pencil.…………………………………………………………………… The properties of its materials are Color: yellow………………………………………………………………………. Feel: smooth and hard………………………………………………………………………. Stretch? …N……o…,…i…t……d…o…e…s……n…o…t.……………………. 112

2 Sorting Materials When we observe objects, we can see that they are made of materials that sometimes have the same or different properties. So, the materials will be sorted into groups by their observable properties. How can we sort toys and KYE things into groups? Let’s Try This! Circle ( ) the toys. Cross out (✗) the things. ✗ ✗1 2 3 45 6 9 7 ✗ ✗ 8✗ 113Materials and Sounds

We can sort materials into groups by their observable properties, such as shape, color, and size. How can we sort materials into groups? 3Science Process Skills Science Process Skills Enhancing Activity Observing Classifying How Can WeGrSoourptsM? aterials into Inferring Objective: 1. To give rules to sort materials Interpreting data and making conclusions 2. To observe and sort materials by their properties PQrueedsictitonth:eHaonwswcearn: we sort materials into groups?We can sort materials into groups by their observableKYE ....................................................................................................................................................................................................................... properties........................................................................................................................................................................................................................ What to Prepare 1. A 1-baht coin 2. An eraser 3. A notebook 4. A handkerchief 5. A balloon 6. A fabric doll Step by Step 1. Work in groups. Observe the objects made of different materials in the activity. 2. Share ideas about the materials and how to sort them. Choose 1-2 properties to sort them. 3. Discuss and sort the materials into groups. Record what your group did. 114 Discuss and sum up the result.

Record Your Data (Example) Sorting materials We sorted the materials into groups by their type.……………………….……….………………………………………………………………………………………….. Group Object Objects made of fabric Fabric doll, handkerchief.................................................................................................................. .......................................................................................................................................................................................... Objects made of other materials Balloon, 1-baht coin, notebook, eraser.................................................................................................................. .......................................................................................................................................................................................... We sorted the materials into groups by ……………………..………….…………………………………………………………………………………………. G(Trhoeupresult varies depending on the object usedOibnjethcet activity.).................................................................................................................. .......................................................................................................................................................................................... KYE .................................................................................................................. .......................................................................................................................................................................................... Sum It Up! We found that we need to observe ………………th…e……p…r..…o…p…e…r…t…ie…s……o…f……m…a…t…e…r…ia…l…s…………. first. Then, we sort the materials that have the same property into ✓ the same different group. We learned that we need to observe the properties of materials first. Then, we sort the materials that have the same property into the same group. For example, if we sort the materials by their colors, we will put the objects that have the same color into the same group. 115Materials and Sounds

We can sort materials into groups by their observable properties, such as color, size, feel, and use. Examples of material sorting 2 Color 1 Shape round rectangular red blue KYE 3 Size Here is how to sort materials into groups by their properties. large medium small 4 Feel hard soft smooth rough 116

FEuxeelr-cuipse 2 1 Look at the pictures. Describe the properties used for sorting. Group 1 Group 2 1. The objects are sorted by their materials.………………………………………………………………………………………………………….. KYE Group 1 is objects made of plastic.……………………………………………………………………………………………………………………………………………………………….. Group 2 is objects made of wood.……………………………………………………………………………………………………………………………………………………………….. Group 1 Group 2 2. The objects are sorted by their colors.………………………………………………………………………………………………………….. Group 1 is green objects.……………………………………………………………………………………………………………………………………………………………….. Group 2 is red objects.……………………………………………………………………………………………………………………………………………………………….. 117Materials and Sounds

Knowledge Summary 1Lesson ... Complete the chart and draw pictures. Materials and Their Properties The materials used for making Objects objects are ... Objects, such as Rubber a balloon, …a…n………e…r…a…s…e…r…,……a…n…d………a handkerchief,………………………………………………………………………………. KYE Fabric………………………………. are made of one type of material. (Example) …………P…la……st…i…c………. (Draw.) Paper Objects, such as scissors, a……p…e……n…c…il…,……a…n…d………a…………. television,………………………………………………………………………………. are made of many types of materials. (Example) Wood………………………………. (Draw.) 118

Here are some observable Materials can be sorted properties of materials. by their ... Shape Color………………………………………………. Feel………………………………………………. These balloons are made Size KYE from rubber.…………………………………………………………………….. Its material is …so…f…t…, ……sm……o…o…t…h……o……r ……r…o…u…g…h…, ……a…n…d………st…r…e…t…c.hy. It does not let water, heat, and electricity go through it easily. This blouse is made of 119Materials and Sounds fabric.………………………………………………………………………………………. Its material is …li…g…h…tw……e…i…g…h…t…, ……so……ft…,……a…n…d………n…o…t……o…r………a……. …li…tt…le………b…i…t……s…t…re…t…c…h…y….……I…t……c…a……n……b…e……………. folded.……………………………………………………………………………………… It holds water well, but do not let heat go through it easily.

Think HigherLesson 1 1 Observe 10 objects in your house. Record your findings in the table below. Then, fill in the blanks. (Example) Object Is ait tahintogy?or Wmahdaet iosf?it mHamoteawrdiaemlsoafni?syit 1. Handkerchief Thing Fabric 1………………………………………… ........................................................ ........................................................ ........................................................ 2. Frying pan Thing Metal and plastic 2………………………………………… ........................................................ ........................................................ ........................................................ 54763..... (The result varies depending on the object used in the activity.)………………………………………… ........................................................ ........................................................ ........................................................ ………………………………………… ........................................................ ........................................................ ........................................................ KYE ………………………………………… ........................................................ ........................................................ ........................................................ ………………………………………… ........................................................ ........................................................ ........................................................ ………………………………………… ........................................................ ........................................................ ........................................................ 8. ………………………………………… ........................................................ ........................................................ ........................................................ 9. ………………………………………… ........................................................ ........................................................ ........................................................ 10. ………………………………………… ........................................................ ........................................................ ........................................................ From the activity, I found that… 1. The toys are made of .................................................................................................................................................................... ............................................................................................................................................................................................................................................................................. 2. The things are made of ............................................................................................................................................................ ............................................................................................................................................................................................................................................................................. 120

2 Look at the pictures. Compare the 2 materials of the 2 objects. 1. Object 1 Object 2 • They are rulers.………………………………………………………………………………………………………………………………………………………………… KYE • The same properties of the 2 materials: ……T…h…e…y………a…r…e……s…m……o…o…t…h………. and hard.……………………………………………………………………………………………………………………………………………………………………………………………….. • The different properties of the 2 materials: …………………………………………………… …M……e…t…a…l……le……ts………e…le…c…t…r…ic…i…t…y……g…o………t…h…r…o…u…g…h……i…t…, ……b…u…t……p…l…a…s…t…ic………d…o…e…s……n…o……t.…………………………………… 2. Object 1 Object 2 • They are toys.………………………………………………………………………………………………………………………………………………………………… • The same properties of the 2 materials: …T…h…e…y………a…r…e……l…ig…h…t…w……e…ig…h……t.. ……………………………………………………………………………………………………………………………………………………………………………………………….. • The different properties of the 2 materials: …………………………………………………… Fabric is softer than plastic.………………………………………………………………………………………………………………………………………………………………………………………………… 121Materials and Sounds

3 Read the information in the table below and answer. read think write Object Material Color Shape Feel 1 Plastic Blue Rectangular Smooth 2 Rubber White Rectangular Smooth 3 Plastic Red Cylindrical Smooth 4 Rubber White and black Round Smooth 1. Which objects can stretch? Why? Objects 2 and 4 can stretch because they are made from rubber.............................................................................................................................................................................................................................................................................. 2. If you have to sort the objects into groups, how would you sIowrtoutlhd esomrt?thWemhbyy?their materials. Objects 1 and 3 are made of plastic, soKYE ............................................................................................................................................................................................................................................................................. they are sorted into the same group. Objects 2 and 4 are made from rubber, so............................................................................................................................................................................................................................................................................. they are sorted into the same group.............................................................................................................................................................................................................................................................................. Perfect Your 21st Century Skills Work in pairs. Share your ideas about your favorite toys or things. Choose one of them and make it from the materials and tools that you and partner have. Decorate it. Present your pair work to the class. 21st Century Skills Indicating Behaviors Level 321 Life and career skills The student is able to set the goal for the group. The student is able to work with others and accept their opinions. Learning and innovation skills-4Cs The student is able to design his/her work creatively. 122

2Lesson Sounds Vocabulary Learning Outcomes • Describe how sounds are made. sound • Describe and explain how sounds travel. hear Read and Think Along vibration heTaorn,andoythyionug? Smomuseiocnoe viesr ptlhaeyrien.g KYE Do you know how sounds are made? 123Materials and Sounds

How Are Sounds Made and How Do They Travel? Sounds are a form of Where do sounds we hear energy. They are made when every day come from? objects shake or vibrate. The vibration makes the air around 3. ✓ the objects vibrate and travel to our ears. For example, when a bell shakes, it rings. When a KYE drum surface vibrates, it makes sounds. Let’s Try This! Tick (✓) the activities that make sounds. 1. ✓ 2. 4. 5. ✓ 6. 7. ✓ 8. 9. ✓ 124

The objects that vibrate and make sounds are called vibrating sources. Sounds travel in all directions from vibrating sources. How do objects vibrate? 1Science Process Skills Science Process Skills Enhancing Activity How Are Sounds Made? Observing Objective: To observe and describe the sounds Inferring Interpreting data and making made by different objects conclusions Question: How are sound made? Predict the answer: Sounds are made when objects vibrate........................................................................................................................................................................................................................ KYE What to Prepare A plastic ruler Step by Step 1. Touch your front neck with your hand when you speak and stop speaking. 2. See what happens with your front neck and how the sound is made from it. Record your findings. 3. Place the plastic ruler over the edge of the desk. One side of the ruler is 10 cm away from the edge. Press the other side over the desk with your hand. Use the other hand to push it downward and release it. Repeat several times. 4. See what happen with the ruler and how the sound is made from it. Record your findings. Discuss and sum up the result. 125Materials and Sounds

Record Your Data Observing how objects make sounds What happened? Sound Test Tvhiebroatbejesc. t Tdhvoeibersoabtnejeo.ctt Istomunadkess. nsoItotudmnodeassk.e • Touch your front neck when ✓✓ you speak. • Touch your front neck when ✓ ✓ you stop speaking. • Push the ruler downward and ✓ ✓ release it. • Do nothing with the ruler. ✓✓ KYE Sum It Up! We found that when speaking, …t…h…e……f…r…o…n…t…n……e.c…k……v…i…b…r…a…t…e…s……a…n.d.……i…t…m……a…k…e…s……s…o…u…n…d…s…. When pushing the ruler downward and releasing it many times, .…it……v…ib…r…a…t…e…s……a…n…d……m……a…k…e…s……s.o. unds So, the sounds are made when …………….……o…b…j…e…c…t…s…v…i…b…r…a…t…e…………….. The objects that vibrate and make sounds are called …………….…v…i…b…r…a…ti…n…g……s…o…u…r…c…e…s………….. We learned that sounds are made when objects vibrate. The objects that vibrate and make sounds are called vibrating sources. For example, a bell rings when it shakes. Our voice is made when the vocal cords inside the neck vibrate. 126

Sounds can be made in many ways, such as drumming, pulling, rubbing, hitting, and blowing. But when objects or vibrating sources stop vibrating, their sounds also stop. Vibrating sources can be divided into 2 groups: natural and man-made vibrating sources. Natural vibrating sources are those such as humans, animals, and waterfalls. Our voices Bird chirping Waterfall falling KYE Man-made vibrating sources are those such as sounds from vehicles and many other objects. Train whistle Guitar playing Fireworks exploring Printer sound Chime Bicycle bell ringing 127Materials and Sounds

2Science Process Skills Science Process Skills Enhancing Activity Observing How Do Sounds Travel? Inferring Predicting Interpreting data and making Objective: To observe and describe how conclusions sounds travel Question: How do sounds travel? Predict the answer: Sounds travel in all directions........................................................................................................................................................................................................................ What to Prepare A radio or a cellphone Step by Step KYE 1. The teacher plays music through a radio or cellphone from the back of the classroom. Then, let students discuss how the sound travels. 2. The students are divided into groups of 5 and mark the standing positions as follows: • Position 1: left corner of the front • Position 2: right corner of the front • Position 3: corridor, outside the classroom • Position 4: right corner of the back • Position 5: left corner of the back 3. Predict at which positions your group can hear the music. Record your group’s prediction. 4. Start the activity. The teacher stands at the middle of the classroom and plays the music. 5. Each group listens to the music and switches to all 5 positions. 6. Record what happens. Draw how the sound traveled. 7. Discuss and sum up the result. 128

Record Your Data Observing how the sound travels Position Prediction Findings ✓ hear the music Position 1 ✓ hear the music ✓ hear the music ✓ hear the music Position 2 ✓ hear the music ✓ hear the music ✓ hear the music Position 3 ✓ hear the music (Example) Position 4 ✓ hear the music KYE Position 5 ✓ hear the music How the sound travels (Draw.) Sum It Up! We found that when playing the music, students in all positions ✓ can cannot hear the music. So, the sound …t…r…a…v…e…ls……i…n……a…ll……d…ir…e…c…t…io……n…s.…………………………………….. We learned that sounds travel in all directions from vibrating sources. Hearers can hear the sounds although they are not in the place where the sounds are made. 129Materials and Sounds

Sounds travel in all directions from vibrating sources. Hearers can hear the sounds although they are not in the place where the sounds are made. The sounds travel like a ripple on the water’s surface when we throw a stone in. The ripple spreads farther and farther away from the stone, and then finally disappears. Like the sounds, the ripples will fade away little by little. KYE ScFieanctce Noise pollution takes place when noises are too loud or sounds are unwanted, such as sounds from airplanes, long-tail boats, and trains, which harm our ears or affect our lives. 130

EFuxeelr-cuipse 1 4. ✓ 1 Tick (✓) the vibrating sources. 1. ✓ 2. ✓ 3. 2 Look at the pictures. Fill in the blanks. 1. A dog makes a sound.......................................................................... ✓ The sound is made naturally. People make the sound. KYE 2. makes a sound.A television......................................................................... The sound is made naturally. ✓ People make the sound. 3. makes a sound.A smartphone......................................................................... The sound is made naturally. ✓ People make the sound. 131Materials and Sounds

3 Tick (✓) the correct items. Situation Is a sound made? 1. A rooster is crowing. Yes, it is. No, it is not. ✓ 2. People are talking. ✓ 3. Kate is sleeping. ✓ 4. A teacher is teaching. ✓ 5. Sam is watching television. ✓ 6. Natalie is meditating. ✓ 4 Look at the pictures. Answer the questions. KYE 1. Is a sound made? ✓ Yes, it is. No, it is not. How do you know? …T…h…e……t…e…le…p…h…o……n…e……is……v…ib…r…a…t…i…n…g…. …………………………………….. How does the sound travel? …T…h…e……s…o…u…n…d……t…r…a…v…e…ls……i…n……a…ll……d…ir…e…c…t…io……n…s…s…o……t…h…a…t.. the girl can hear it.……………………………………………………………………………………………………….. 2. Is a sound made? Yes, it is. ✓ No, it is not. How do you know? …T…h…e…s…e……d…o…ll…s……a…r…e……n…o…t…v…i…b…r…a…ti…n…g….……………………………….. How does the sound travel? …T…h…e……s…o…u…n…d……d…o……e…s……n…o…t…t…r…a…v…e…l……b…e…c…a…u…s…e……t…h…e…r…e.. is no sound.……………………………………………………………………………………………………….. 132

Knowledge Summary 2Lesson ... Fill in the blanks. Sounds Sounds are made when KYE …o…b…je……c…ts………v…ib…r…a…t…e….…………………………………… …………………………………………………………………………….. Sounds travel from their vibrating sources …in………a…ll……d…i…r…e…c…t…io…n…s….………………………………… …………………………………………………………………………….. Vibrating sources ………M……a…n…-…m……sao…d…ue…rc…e…v…sib…r…a…t…i…n…g……… ……………N…a…t…u…r…sao…l…u…rvc…ie…b…sr…a…t…in…g…………… ………………………………………………………………… ………………………………………………………………… Telephone Drum Dog Thunder 133Materials and Sounds

Think HigherLesson 2 1 Look at the pictures and fill in the blanks. 1. ✓ The sound is made naturally. People make the sound. The sound is from a lion.……………………………………………………….. The sound is made when ……th…e……l…io……n…'s…………. …v…o……c…a…l …c…o…r…d…s……in…s…i…d…e……h…i…s…t…h…r…o…a…t……v…ib……ra…t…e….………………………………. 2. ……………………………………………………………………………………………………………………………. KYE The sound is made naturally. ✓ People make the sound. The sound is from t…h…e…g…u…i…t…a…r…p…l…a…y…e…d…b…y……a…w……o..man. The sound is made when …t…h…e……w…o…m……a…n…….. …p……la…y…s……t…h…e……g…u…it…a…r……a…n…d……t…h…e……s…tr…i…n…g…s……v…ib…r…a…t…e….………………………. ……………………………………………………………………………………………………………………………. 2 Draw a musical instrument and how the sound travels. Then, fill in the blanks. can make a sound.(Example) A drum…………………………………………………….. This sound can be made when …w……e……h…i…t…t…h…e……d……ru…m………s…u…r…fa…c…e………a…n…d……i…t…v…i…b…r…a…t…e…s…. …S…o…,……w……e. can hear the sound.……………………………………………………………………………………………………………………………. The drum sound travels …f…r…o…m………th…e………d…r…u…m.. (Draw.) surface in all directions.……………………………………………………………………………………………………………………………. 134

3 Read and answer. read think write “Dan would like to play music with his friends, but he does not have any musical instruments. So, he uses a plastic pail, a can, and a cardboard box as drums and chopsticks as drum sticks.” 1. Do you think the objects he uses instead of real drums are KYE good? I think those objects he uses are good because they can make sounds like real............................................................................................................................................................................................................................................................................. drums do. Moreover, he can save money from buying the real ones.............................................................................................................................................................................................................................................................................. 2. If he wants to make a sound from the plastic pail, what can he do? He can hit the plastic pail with the chopsticks. The pail will vibrate and a sound............................................................................................................................................................................................................................................................................. is then made.............................................................................................................................................................................................................................................................................. Perfect Your 21st Century Skills Do the activity in groups of 3-4. 1. Share ideas and search how to make a musical instrument. 2. Prepare materials and make the musical instrument as your group discussed. 3. Test your group work and show how to use it to the class. 21st Century Skills Indicating Behaviors Level 321 Life and career skills The student is able to set the goal for the group. Learning and innovation skills-4Cs The student is able to work with others and accept their opinions. The student is able to design his/her work creatively. 135Materials and Sounds

3Assessment and Unit I Got ...... out of Evaluation Section ......................... 55 Part 1 35 points 1 Look at the pictures. Tick (✓) each material used for making the object. Object Material 1. Paper Fabric Metal Rubber Wood Plastic ✓ KYE 2. ✓ 3. ✓ 4. ✓ 5. ✓ 1. Standard SC 2.1 G. 1/2 136 5I got out of .........................

2 Look at the picture. Sort the objects in the picture into groups by their properties. Beach ball Curtains Robot toy Teddy bear Cushion Balloons Towels Books Cup KYE Basketball 1. The objects are sorted by their type.………………………………………………………………………………………………………….. Things (Example)...........................……….........................…. Toys...........................……….........................…. Balloons, Teddy bear, basketball,..................................................….........……...................................……….....…. Cushion, cup, towels, books, and..................................................….........……...................................……….....…. beach ball, and robot toy..................................................….........……...................................……….....…. curtains..................................................….........……...................................……….....…. ..................................................….........……...................................……….....…. ..................................................….........……...................................……….....…. 2. The objects are sorted by ………………………………………………………………………………………. (The answer may vary depending on the teacher’s consideration.)...........................……….........................…. ...........................……….........................…. ..................................................….........……...................................……….....…. ..................................................….........……...................................……….....…. ..................................................….........……...................................……….....…. ..................................................….........……...................................……….....…. ..................................................….........……...................................……….....…. ..................................................….........……...................................……….....…. 2. Standard SC 2.1 G. 1/2 10 137I got out of M.a....t..e....r..i..a...l..s.....and Sounds

3 Look at the pictures. Fill in the blanks. 1. This is a balloon.…………………………………………………………………….. It is made from 1…………………………………………………….. material(s), which is/are rubber.……………………………………………………………………………………………………………………… The properties of the material are… Color: Feel:red……………………………………………………………….. smooth and soft………………………………………………………………….. Shape: Stretch?round……………………………………………………………. …Y…e…s…, …i…t…d…o…e……s.………………………… KYE 2. This is a frying pan.…………………………………………………………………….. It is made from 2…………………………………………………….. material(s), which is/are metal and plastic.……………………………………………………………………………………………………………………… The properties of the material are… Color: Feel:black……………………………………………………………….. smooth and hard………………………………………………………………….. Shape: Stretch?round……………………………………………………………. …N…o…,……it……d…o…e…s……n…o…t…. ……………… 3. Standard SC 2.1 G. 1/1 out of 138 10I got .........................

4 Look at the pictures. Compare the materials of the objects in the pictures. Picture 1 Picture 2 The objects in Picture 1 are The objects in Picture 2 are made of metal.………………………………………………………………. made of plastic.…………………………………………………………………. Similar properties: They feel smooth and hard.………………………………………………………………………………………………………………………………………………. Different properties: …T…h…e……m……e…ta…l……s…p…o…o…n…s……le…t……h…e…a…t……g…o……th……ro…u…g…h……t…h…e…m………e…a…s…il…y…,…b…u…t……. 5 Answer the questions.the plastic spoons do not.………………………………………………………………………………………………………………………………………………………………………………………………………………. KYE 1. Explain how sound are made and give an example. (2 points) Sounds are made when objects vibrate. The objects that vibrate and make sounds….......................................................................................................................................................................................................................................................................... are called vibrating sources. For example, when a drum surface vibrates, the drum….......................................................................................................................................................................................................................................................................... sound is made.….......................................................................................................................................................................................................................................................................... 2. Explain how sounds travel and draw a picture to show how. (3 points) (Example) …S…o……u…n…d…s…t…r…a…v…e…l…i…n……a…l…l …d…i…re…c…t…i…o…n…s……fr…o…m……v…i…b…r…a…t…in…g.. sources.…………………………………………………………………………………………………………….. …………………………………………………………………………………………………………….. …………………………………………………………………………………………………………….. (Draw.) 4. Standard SC 2.1 G. 1/1 5. Standard SC 2.3 G. 1/1 I got ou5t of 5 139I got out of ......................... M.a...t...e....r..i..a...l..s.....and Sounds

Part 2 20 points Circle the correct answer in each question. 1. What material is used for making 6. What are the properties of a desk? the object in the picture? a. smooth and soft a. Plastic b. rough and colorful b. Paper c. smooth and lasts long c. Glass 7. Which objects are in the same 2. What material is lightweight and group? can be torn easily? a. Pen, eraser, scissors a. Rubber b. Paper b. Pencil case, notebook, table c. Metal tennis ball c. Teddy bear, marble, frying pan 3. Which object is made of glass? a. Pencil b. Fish tank 8. How do we sort objects into KYE c. Cardboard box groups? a. Sort the objects that have the 4. Which object is made of one same property into the same material? group. a. Balloon b. Pot b. Sort the objects that have the c. Pan same properties into different groups. 5. What is the difference between a c. Sort the objects that have paper bag and a plastic bag? different properties into the a. A paper bag lets water go same group. through it, but a plastic bag does not. 9. What should we do first before b. A paper bag is in one color, but sorting objects? a plastic bag can be in different a. Count the objects. colors. b. Sort the objects into groups. c. A paper bag is lighter than a c. Observe their properties. plastic bag. 140

10. How can you tell if the object has 15. How are sounds made? a rough or smooth surface? a. They are made when objects a. From its size vibrate. b. From touching b. They are made when objects c. From its color 11. Naree sorts things in her room as stay still. follows: c. They are made when objects’ Group 1 Blouses Towels shapes change. 16. Where does our voice come from? a. Teeth b. Lips Group 2 Eraser Balloon c. Vocal cords How are the things sorted? 17. How many groups are vibrating a. By size sources divided into? b. By material a. 1 group b. 2 groups KYE c. By feeling c. 3 groups 12. From Question 11, what are the 18. Which one is a man-made sound? things in Group 1 made of? a. Parrot chirping a. Paper b. Glass b. Train whistle c. Fabric c. Thunder 13. Which one can be sorted into a 19. How do sounds travel? group of soft objects? a. Travel forward b. Travel up and down a. Pillow b. Book c. Travel in all directions c. Cardboard box 20. From the picture, to hear the sound 14. If Kate wants to know what her more clearly, at How sounds travel which position schoolbag’s surface is like, what should she do? 3 1 should you stand? a. Touch it with her hands. Vibrating source a. Position 1 b. Look at it. b. Position 2 c. a. and b. are correct. 2 c. Position 3 Part 2 20 141I got out of M.a....t..e....r..i..a....l.s.....and Sounds

Unit Rocks and Sky 4 Objects KYE Dioinn ytthohedueifdnfteahirgyienhtniktmtt?itemheeanissdky prDolaocckesysofauroremkndodifwiffefreheronenwt?t Indicators 1. Identify sky objects in the sky in the daytime and at night from the collected data. (Standard SC 3.1 G. 1/1) 2. Use evidences to explain why stars and planets cannot be seen in the daytime. (Standard SC 3.1 G. 1/2) 3. Explain what rocks are like from their observable characteristics. (Standard SC 3.2 G. 1/1)

1Lesson Rocks Vocabulary Learning Outcomes • Explain what rocks are like from their observable characteristics. Read and Think Along rock color weight Hodwid myoanuyfirnodc?ks I cItanisnosto lihfteaitvyu. p. KYE mbeaanuTythificsuol.rlooTrchskeriniessaidree. What do you think rocks are like? 143Rocks and Sky Objects

What Are Rocks Like? Rocks are a hard part of the Earth’s surface and can be found everywhere. They come in different types and shapes depending on their characteristics. What are the characteristics KYE of rocks? Let’s Try This! Survey the rocks in your garden, village or school area. Draw and color the pictures of the rocks you find. (Example) (The result depends on students' survey.) (Draw.) (Draw.) (Draw.) They are found in They are found in They are found in my garden.……………………………………………………………………….. ………………………………………………………………………. ………………………………………………………………………. 144

Rocks are natural and can be found in many places. Their characteristics, such as color, layer, shape, weight, hardness, and texture, can be observed easily. How are the observable characteristics of rocks different? 1Science Process Skills Science Process Skills Enhancing Activity What Are Rocks Like? Observing Objective: To observe and explain what rocks Classifying Inferring are like from their characteristics Organizing data and communicating Question: Do rocks have different characteristics? Interpreting data and making conclusions Predict the answer: No, some rocks have similar characteristics, but some have....................................................................................................................................................................................................................... KYE different characteristics........................................................................................................................................................................................................................ What to Prepare 1. 3 small pieces of rocks of different types (prepared by your teacher) 2. A magnifying glass Step by Step 1. Work in groups of 3-4. Observe the 3 small pieces of rocks. 2. Use the magnifying glass to observe their characteristics, such as color, texture, and layer. Record your group’s findings. 3. Each group finds another 2 rocks around your school. Observe and record your group’s findings. 4. Present your group’s findings. Discuss and sum up the result. 145Rocks and Sky Objects