Flipp Book Class 3 online

Create the Second Picture: Step-1 : Start the Tux Paint Step-2 : Click 'New' Tool. Varieties of background colors will appear. Step-3 : Select the light green background and Press Enter key or click the 'Open' button. Step-4 : Select suitable pictures using Stamp Tool, set in required size, change the direction and place the image in right place of the Canvas. . Step-5 : Select Text Tool and Type Text as shown. Step-6 : Click the 'Save' button. Page More Fun with Tux Paint 96

Create the Third Picture: Step-1 : Start the Tux Paint Step-2 : Click 'New' Tool. Varieties of background colors will appear. Step-3 : Select the light green background and Press Enter key or click the 'Open' button. Step-4 : Select suitable pictures using Stamp Tool, set in required size, change the direction and place the image in right place of the Canvas. . Step-5 : Select Text Tool and Type Text as shown. Step-6 : Click the 'Save' button. Page Smart Computer Science Book-3 97

Create the Fourth picture: Step-1 : Start the Tux Paint. Step-2 : Click 'New' Tool. Varieties of background colors appears. Step-3 : Select the light green background and Press Enter key or click the 'Open' button. Step-4 : SSelect suitable pictures using Stamp Tool, set in required size, change the direction and place the image in right place of the Canvas. Step-5 : Select the Text Tool and type text as shown. Step-6 : Click the 'Save' button. Page More Fun with Tux Paint 98

Create the Fifth picture: Step-1 : Start the Tux Paint. Step-2 : Click 'New' Tool. Varieties of background colors will appear. Step-3 : Select the light green background and Press Enter key or click the 'Open' button. Step-4 : Select suitable pictures using Stamp Tool, set in required size, change the direction and place the image in right place of the Canvas. Step-5 : Select the Text Tool and type text as shown. Step-6 : Click the 'Save' button. Page Smart Computer Science Book-3 99

Create the last picture Step-1 : Start the Tux Paint Step-2 : Click 'New' Tool. Varieties of background colors will appear. Step-3 : Select the light green background and Press Enter key or click the 'Open' button. Step-4 : It is not given any picture here. If you are willing to put, you can place your desired picture. Step-5 : Select the Text Tool and type text as shown. Step-6 : Click the 'Save' button. Page More Fun with Tux Paint 100

CREATE SLIDE SHOW OF STORYBOARD Slide show is a display of selected pictures presented one by one in systematic way. To display storyboard as a slide show, do the following steps: Steps to Follow: Step-1 : Click the 'Open' Tool. List of saved pictures appears. Step-2 : Click the Slide button. Step-3 : Select the pictures to display in slide show one by one from the list. Step-4 : Make sure order of display slide show. Each picture will be marked by Page Smart Computer Science Book-3 101

numbers that you click. Step-5 : If you want to deselect the selected picture, just click once again. Then, select next picture for arranging the order. Step-6 : Click the slide scale to adjust the speed of the slide show at the button on left corner of the screen. Step-7 : Finally click the 'Play' button to start slide show. If you are willing to disable automatic slide transition, select the left most bar. In such a case, you will need to press a key or click to go to the next slide. Step-8 : During the slide show, press Enter key, Spacebar, Right Arrow key or click Next button at the bottom- left corner to manually skip next slide. Step-9 : Click the 'Back' button at the bottom-right corner to return to the picture selection screen. Step-10 : Press Esc to exit the slide show. Trick & TIPS If picture is not selected for the slide show from the list, all the saved pictures will be displayed in the slide show action. Page More Fun with Tux Paint 102

Points to Know • Stamp Tool is as like as a rubber stamp, This Tool is used to paste ready made images. • Sound Tool is located just at the lower left corner which is used to replay the sound effects. • To disable sound effects, press Alt+S from the keyboard. • Some stamps can or can not be colored. • Storyboard is a series of pictures placed in the proper order that tells a story. • A slide show is a display of selected pictures presented one by one in a systematic way. • Slide button is used to display the slide show of the story board. • Slide scale is used to adjust the speed of the slide show. • 'Play' button is used to start slide show. • 'Back' button at the bottom-right corner is to return to the picture selection screen. • Press Esc. to exit the slide show. • Control Tool helps to flip vertically, display mirror image and increase or decrease the size of images. Terms to Know Stamp : Like rubber stamps or stickers which can be pasted on the drawing area. Storyboard : A series of pictures that tell a story. Slide show : One by one systematic display of selected image with certain time interval. Slide : A slide is a single screen of a presentation. Canvas : Drawing area or working place. Page Smart Computer Science Book-3 103

Worksheet Objective Questions 1. Fill in the blanks with suitable Words: Esc Stamp Slide New Back Play Alt+S Outline a. ......................... tool is used to paste ready made image. b. A .....................show is a display of selected picture presented one by one in a systematic way. c. Press ........................ key to exit a slide show. d. Click the ..................... button to start slide show. e. ...................... button is used to return to the picture selection screen. f. The speed of the slide show is adjusted with ................ scale. g. After clicking .................. tool, varieties of background colors will appear. h. Press Alt+S from the keyboard to disable sound. i. ....................... outline of stamp follows movement of the mouse when you click a stamp and move the mouse. Page More Fun with Tux Paint 104

2. Write 'T' for true and 'F' for false statements: a. We can make slide show of the storyboard. b. Tux paint screen appears only in the full screen view. c. You get the list of stamps on the right hand side of selector panel. d. Control Tools are located at the top of the stamp panels. e. Color can be changed for all the stamps image. f. Text Tool is used to type text. Descriptive Questions 1. Answer the following questions: a. How many types of Tux Paint App options are there? Write their names. Ans : .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... Page Smart Computer Science Book-3 105

b. When do you get the title screen of the Tux Paint? Ans : .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... c. What do you mean by drawing Canvas? Ans : .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... d. What is a slide show? Ans : .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... Page More Fun with Tux Paint 106

e. What do you mean by the story board? Ans : .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... f. What is the role of the help panel? Ans : .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... g. Why do you use the Stamp Tool? Ans : .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... Page Smart Computer Science Book-3 107

Analytical Case Study Type of Questions : 1. Ratnaman Dangol wants to make a drawing in Tux Paint, so he has to start Tux paint. a. In which mode will he open the Tux Paint, full screen view mode or Windowed view mode ? b. In which mode would you suggest him to open the Tux Paint? 2. Rudra Narayan has prepared a storyboard. He wants to show this storyboard in the slide show in a sequence. a. How would Rudra Narayan numbered the picture for the slide show ? b. How would he execute the slide show? c. Once after executing the slide show, he found the order of picture no. 2 and 3 are to be interchanged. How would Rudra solve this problem? d. Finally he thought the picture number 4 is not suitable for this story slide show, how should he remove it from this slide show ? 3. Jiya Khatun has to prepare a storyboard about 'Wild animals'. a. If she has to place some ready-made pictures, how would she do the task? b. If she has to increase or decrease the size of the picture, how would she do? c. If she has to turn the picture, Which technique would she use ? d. If she is interested to display some images as mirror view ? Which technique would she use ? Page More Fun with Tux Paint 108

e. In the execution of slide show, Miss Khatun found that slide show was going in very high speed transition. In such a case, which technique would she use to solve ? 4. Suvab Karki wants to execute the slide show manually not by automatic. a. How would he set the manual slide show transition? b. What are the key different between automatic and manual slide transition ? 5. Shreekanta Chaudhary has prepared a story board slide show, and play slide show. a. During the execution, If he clicks 'Back' button, what will happen? b. During the slide show, he decided to exit from slide show execution, in this situation what would he do ? Page Smart Computer Science Book-3 109

Lab Activities 1. Prepare the story board and slide show of rat and lion in the basis of following pictures. Page More Fun with Tux Paint 110

2. Draw and paint the following drawings by watching the reference video. Page Smart Computer Science Book-3 111

S S ICHAPTER tep by tep nstruction 7 & Flowchart Lakpa : I have sense. I can work myself. Can you do given work, yourself? Computer : No, I need step- wise guidelines, what I have to do. I need your instruction. We know computers are machines. Therefore they cannot do anything until they are ordered to do so. They have to be fed with proper guidelines just as we feed a little child with proper guidelines to wash his face at the washbasin or how to cross a road etc. When a little child is to be told something, one needs to make serial- wise plan. Similarly, we need to make a step- by-step plan to tell the computer to obey us. Taking the example of telling a child to buy and have ice cream from the market, let's see how he can be instructed in a serial - wise order. Page Step by Step Instruction 112

Go to ice-cream stall. Ask one large ice-cream. Give the money. Take Ice cream Walk to garden with ice- Sit and eat the ice-cream. cream. Page Smart Computer Science Book-3 113

These six steps help a small child to learn the process of buying and having ice-cream. These steps, when put in some boxes made for the purpose of telling the computer what to do, are named as a Flowchart. The boxes which are used in the flowchart are in the following shapes. Each box has its own function which is written below: Start & Stop This box is also called ‘Terminal Box’. This box has dual function to start and stop the task. When we start writing a plan in the shape of a flowchart, ‘Start Box’ is used in the very beginning. When the ‘Flowchart’ is completed, we use the ‘Stop Box’ in the last. Processing This box is called the ‘Process Box’ it is rectangular in shape. All the other steps other than ‘Start and Stop’ steps are written in it. Flow Lines The lines with arrows are called as follows lines. These flow lines are used to connect two boxes in flowchart. The flow lines can be directed towards all the four directions. Page Step by Step Instruction 114

The ‘flowchart’ is a serial-wise plan put into the boxes of different shapes joined together with the help of flow lines. 1. The different steps of buying and having ice cream, when you put into the boxes will look like as follows. Start Go to ice-cream stall Ask one large ice-cream Give the money Take Ice cream Walk to garden with ice-cream Sit and eat the ice-cream Stop Page Smart Computer Science Book-3 115

2. The different steps for washing the face, when you put into the boxes, will look like as follows: Start Go to the wash room Open the Tap Rinse your hand and soap Apply soap to face and wash it Close the tap and dry the face END Page Step by Step Instruction 116

3. Draw flowchart to pack the school bag. Start Look at the time table Match periods and books Put books and notebook in the bag Put pencil box in the bag Put the lunch box and water bottle Close the bag Stop Page Smart Computer Science Book-3 117

4. Draw flowchart for making a cup of tea. Start Put the tea bag in a cup Fill the kettle with water Boil the water Pour boiled water into the cup Add milk and sugar to the cup Stir the tea Drink the tea Stop Page Step by Step Instruction 118

5. Show the simple mathematical process to multiply two numbers Start Take two numbers Multiply two numbers Print the result Stop Page Smart Computer Science Book-3 119

6. Show the simple mathematical process to add three numbers. Start Take two numbers Add three Numbers Print the result Stop Page Step by Step Instruction 120

Points to Know • Computers are machines. Therefore they cannot do anything unless and until they are told to do so. • ‘Terminal Box’ has dual functions to start and stop the task. • ‘Process Box’ is rectangular in shape. Terms to Know Instruction : Order to work. Flowchart : A diagram of the sequence of movements or actions. Flow lines : A route followed through successive stages of action. Plan : A detailed proposal for doing something. Worksheet Objective Questions 1. Fill in the blanks with suitable Words: Start plan stop rec tangular flowchart follows a. Astep by step ............................ is needed to tell the computer to obey us. b. Terminal box has dual functions to ................. and ................ task. c. ........................ shape is called process box. Page Smart Computer Science Book-3 121

d. The lines with arrows are called as ....................... lines. e. The ........................... is a serial-wise plan put into the boxes of different shapes. 2. Draw different symbols which are used in a flowchart. a. Start/Stop box b. Process box c. Flow Lines Descriptive Questions : 1. Draw different symbols which are used in a flowchart. a. Why START/STOP box are used for? Ans: .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... Page Step by Step Instruction 122

b. What is the meaning of the process box? Ans: .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... c. What is the function of flow lines? Ans: .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... d. What is the flowchart? Ans: .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... Page Smart Computer Science Book-3 123

e. When does the computer do our work? Ans: .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... f. Why do we make step by step plan ? Ans: .................................................................................. .......................................................................................... .......................................................................................... .......................................................................................... Analytical Case Study Type of Questions : 1. Mandakini Tamang has to make the plan of morning activities before school time. Suggest her, how should she make her plan ? 2. Tenjing Sherpa has to make a flowchart with step by step instruction to prepare the omelette in the kitchen. How should Tenjing make plan ? 3. Santu Chaudhary has to make a plan for daily personal hygiene. How should Santu make plan and put the step by Page Step by Step Instruction 124

step instruction in the flowchart? 4. Manik Lal Pariyar has prepared the following steps for 'Brushing Teeth' . Now, let's imagine and find whether it is in correct order, or not . If not, arrange in correct order and put in the flowchart. a. START b. Open the tap and wash your teeth. c. Go to the wash basin. d. Apply the paste on the brush. e. Get up from bed. f. Take brush and paste. g. STOP 5. Shiva Hari Koirala has prepared these instructions to subtract two numbers. Are these instructions in step by step order ? If not, arrange in order and put in the flowchart. a. START b. Print the difference. c. Get the first . d. Stop e. Take the second number f. Subtract the two numbers 6. Suppose you have to buy a story book to take up an idea for story plotting. Now, present the plan how would you buy the book and present in the flowchart? 7. Suppose your final exam is knocking at your door. You have to study by making plan for the best result. How would you make plan? Present in the flowchart. Page Smart Computer Science Book-3 125

CHAPTER 8 Programming with Logo Lakpa : Hello, Mr. Computer! Tell me about your own self. Computer : I need instruction to do something. The set of instructions that tells me what I have to do is said ‘program’. Lakpa : It means, I have to write program for you. Computer : Yes, you must. Using 'Computer Language’ you have to write program to tell me to do something. Lakpa : I don’t know how to write the program. Please guide me. Computer : In this chapter, first I introduce you with the computer language LOGO. Page Programming with Logo 126

INTRODUCTION Computer program is a set of instructions that tells a computer how to carry out a task. The process of writing these instructions is called programming. A computer program is written using a programming language. There are varieties of programming languages. LOGO, BASIC, QBASIC, FORTAIN, COBOL are examples of programming languages. Let's introduce with the LOGO programming language. WHAT IS LOGO? LOGO is a simple computer programming language. It is designed to write a simple program for fun and teach programming for children. It is used to draw figures, type text and perform arithmetic calculations with the help of commands. LOGO stands for Language of Graphics Oriented. It is developed by Seymour Papert in USA. Especially it has been designed for children to give the basic knowledge of programming. LOGO TURTLE The turtle is an imaginary pencil of the Logo program, Just as you use a pencil to draw and write in your notebook, LOGO also uses a pen for drawing. This pen looks like a triangle which is called a Turtle. When you give commands, the turtle draws on the screen. Page Smart Computer Science Book-3 127

Trick & TIPS The first version of LOGO used an electronic robot that resembled a turtle. STARTING MSWLOGO MSWLOGO is a type of LOGO program for using with Microsoft Windows. The steps to be followed to start MSWLOGO are as : Steps to Follow: Step-1 : Click on ‘Start’ button. Step-2 : Type Logo in 'Search box' Step-3 : Logo App appears Step-4 : Click the Logo App. or Step-4 : Double click Logo Shortcut icon from the desktop The MSWLOGO screen will be displayed. Page Programming with Logo 128

Turtle Turtle Turtle MSWLOGO Window Screen Controls Input Box Commander Recall List Control Window Box Buttons COMPONENTS OF MSWLOGO SCREEN There are two sections in the MSWLOGO screen. a. Main screen window b. Commander Window Page Smart Computer Science Book-3 129

MAIN SCREEN WINDOW The main screen window is where you can see the pictures you draw. It has the following components. a. Title Bar b. Menu Bar c. Horizontal Scroll Bar d. Vertical Scroll Bar e. Turtle COMMANDER WINDOW The commander window is further divided into three sections: a. Recall List Box b. Command Input Box c. Control Buttons Command Input Box You can type the command in this area and execute it by pressing the 'Enter key' or by clicking on the Execute button. Recall List It collects the instructions you type into the ‘Input Box’. If the list of commands goes out of view, you can click on the scroll bar to view the commands. If something goes wrong in command, message will appear in this section. It also displays text and result of arithmetic operation. Page Programming with Logo 130

Control Buttons These buttons are available on the right hand side of the commander window. These buttons carry the different tasks. Execute button It executes the command in the Input Box. Status Button It shows a status of the current setting in LOGO. Clicking on it again to close the window. Trace Button It is used for debugging your program. Click once again to disable the tracing. Halt Button It is used to stop the LOGO program from the further execution. Reset Button It is used to clear the LOGO output screen. Step Button It is used to perform the single stepping for debugging your program. Clicking once again to turn off the ‘single stepping’. Page Smart Computer Science Book-3 131

Pause Button It is used to stop the execution of LOGO program temporarily so that you can test and make changes in the program. You have to give ‘CONTINUE’ command for further execution or click on the ‘Cancel’ button. Logo Commands Command is an order or instruction. When you type the LOGO command, The LOGO turtle carries out the task as your command. Entering the Logo commands To enter the Logo commands, click on the ‘Input Box’ and type the commands. Let's enter the following Logo commands. FD 100 RT 90 FD 100 RT 90 FD 100 RT 90 FD 100 RT 90 Page Programming with Logo 132

According to your instruction, you will get the output square. Now, you can imagine, in LOGO, the turtle moves in steps. The screen of the computer is like a graph paper, it divides into row and columns but these are invisible. Fast Access • To repeat a command, select the command and press ‘Enter’ key or click on the ‘Execute’ button. Page Smart Computer Science Book-3 133

MOVING THE TURTLE The turtle always appears in the center of the ‘main screen’ with its head upward. You can move the turtle around the screen in all four directions, up, down, left and right by giving the proper guidelines. FORWARD (FD) command The FORWARD command instructs the ‘Turtle’ to move the given number of steps in the forward direction. Syntax: FORWARD <number of steps> Or FD <number of steps> Example FD 100 Or FORWARD 100 It moves the turtle 100 steps forward and draws a straight line. Page Programming with Logo 134

HOME command Home is the place where the ‘Turtle’ lives when you start LOGO. The starting position of the turtle is the center of the screen with the head pointing upward. Syntax: HOME Example FD 100 HOME It brings the ‘Turtle’ to the center of the screen. THINGS TO KNOW • You may use either capital or small letters in your command. • You must give a single space between the command and the number. • You must press the ‘Enter’ key after you have typed a command otherwise, it will not do anything. • If you type FD100, it will give the message “I don’t know how to FD100”. • If you type only FD, the LOGO will give you the message “not enough inputs to FD”. Page Smart Computer Science Book-3 135

CORRECTION TYPING MISTAKES Before pressing the ‘Enter’ key, you can change whatever you have typed. For example, you have typed in FD100 instead of FD 100, use the left arrow key to take the cursor between D and 1 press the ‘Space Bar’ to insert a space between the command and the number. BACK (BK) Command Syntax: BACK<number> Or BK<number> Example: BK 40 It moves the turtle 40 steps backward from the current ‘Turtle’ position. Trick & TIPS • You can move the turtle back without using the ‘BK’ command; this is done by giving a negative number with ‘FD’. • For Example: FD -50 would move the turtle back by 50 steps. Page Programming with Logo 136

RIGHT (RT) Command The RIGHT or RT command turns the head of the turtle towards the right side. While turning, the turtle rotates, but stays at the same position. Syntax: RIGHT<number of turns or degree> Or RT<number of turns or degree> Example: RT 30 RT 45 RT 75 RT 90 RT 120 RT 160 Trick & TIPS • The term ‘turning’ means to move the turtle’s head in a circular path. A circular path consists of total 360 units. Page Smart Computer Science Book-3 137

Lab Activities 1. Deepika wants to draw a triangle using the FD and RT commands. She wrote the following instructions. Now, test these instructions whether it forms a triangle or not. RT 30 FD 70 RT 120 FD 70 RT 120 FD 70 2. Type the following commands and draw effects in the box. HOME FD 100 RT 90 FD 100 RT 90 FD 100 RT 90 FD 100 Page Programming with Logo 138

LEFT (LT) Command The LEFT or LT command turns the ‘turtles’ to the left that is in anti-clockwise direction. While rotating, the ‘turtle’ is placed at the same location. Syntax: LEFT <number of turns or degree> Or LT<number of turns or degree> Example: LT 100 LT 180 LEFT 30 LT 90 LT 190 LT 45 Page Smart Computer Science Book-3 139

Lab Activities 1. Type the following commands and draw the effects in the box. HOME LT 90 LT 45 FD 100 LT 135 FD 75 LT 90 FD 75 2. Bidhan wants to draw a rectangle using FD and LT commands. What instructions would be written by Bidhan ? ............................................................................................... ............................................................................................... ............................................................................................... ............................................................................................... ............................................................................................... ............................................................................................... ............................................................................................... ............................................................................................... ............................................................................................... Page Programming with Logo 140

Lab Activities 3. Type the following commands to get the following output: FD 80 HOME RT 60 FD 80 HOME RT 120 FD 80 HOME RT 180 FD 80 HOME RT 240 FD 80 HOME RT 300 FD 80 HOME Page Smart Computer Science Book-3 141

CLEAN (CS) command The CLEAN or CS command clears the screen of the monitor and brings the turtle to its initial position. Syntax: CLEAN Or CS Example: CS SETH command The SETH command is used to turn the head of turtle to any direction without using RT or LT command. The SETH command followed by a number, turns the turtle’s head in the clockwise direction by specified units. HIDETURTLE (HT) command The HIDETURTLE or HT command is used to remove or hide the turtle from the screen. It helps to show the picture more clearly on the monitor. Syntax: HIDETURTLE Or HT Page Programming with Logo 142

Example: HIDETURTLE This command hides the turtle from the screen. SHOWTURTLE (ST) command The SHOWTURTLE or ST command is used to show the hidden turtle from the screen. Syntax: SHOWTURTLE Or ST Example: SHOWTURTLE This command shows the hidden turtle from the screen. PENUP (PU) command The PENUP(PU) command lifts the turtle’s pen up. When the turtle moves, it does not draw a line. So, it is useful when non-continuous line is needed to draw. Syntax: PENUP Or PU Page Smart Computer Science Book-3 143

Example: FD 20 PU FD 20 PENDOWN (PD) The PENDOWN or PD command puts the turtle’s pen down. If pen is put down, you can draw lines. Syntax: PENDOWN Or PD Example: FD 20 PU FD 20 PD FD 20 Page Programming with Logo 144

Lab Activities 3. Type the following commands to get the following output. HOME FD 100 PENUP FD 20 PD FD 50 PENERASE (PE) This command turns the turtle’s pen into eraser. After giving this command, FORWARD or BACK command erases the lines. Syntax: PENERASE Or PE Example: HOME FD 100 PE BK 50 Page Smart Computer Science Book-3 145