oxford computer grade 3 chapter 1 to 3 solution exercise https://www.youtube.com/channel/UCZKFHoWsMfjKMMasZswC1mg/

1. Computer
Class: Three
Chapter 1
Topic: Operating System
1: Fill in the blanks with correct words.
Answer 1)folder 2)single-user 3)desktop 4)Operating
system
5) icons
1. A ………………………...is used to store a group of files.
2. ……………………………operating system is generally used at homes.
3. The taskbar is a long, horizontal bar at the bottom of the ………………………. Screen.
4. An ………………………… is a software that helps the user to work with the computer.
5. The small pictures on the desktop are called ……………………
2.Choose the correct option.
Answer a) Operating system b) Both 1 and 2
c) Two d) Both 1 and 2 e) Left
a. This software gets automatically loaded into the computer’s memory when the computer is
switched on.
1) operating system 2) desktop 3) taskbar 4) none of these
b. Which of the following is a multi-user operating system?
1) UNIX 2) windows 8 3) both 1 and 2 4) none of these
c. The start menu is divided into how many panes?
1) one 2) Two 3) Three 4) four
d. A folder can contain.
1) folders 2) files 3) both 1 and 2 4) none of theses
e. Double-click the ………….. mouse button can open any program on the desktop.
1) right 2) left 3) both 1 and 2 4) none of these

2. Chapter 2
Topic: More about Paint
1. Fill in the blanks with correct words.
Answer 1) Cut 2)Zoom in
3) Zoom out 4) reverse 5) select
1. The …… Cut …………… option is used to cut the selected part of a drawing.
2. The ……… Zoom in …………option shows a larger view of the image.
3. The …… Zoom out ………….. option shows a smaller view of the image.
4. The Undo command is used to … reverse ……………the last action performed.
5. You can select a part of a drawing using the …… select ……………….. tool.
2. Write T for true statement and F for false one.
Answer 1) F 2) T 3) T 4)F 5) F
1. The Flip option is used to rotate a drawing. F
2. You can set a drawing as a desktop background. T
3. You can reverse the last action performed using the Undo command. T
4. The keyboard shortcut for the cut option is Ctrl+R. F
5. You cannot change the size of a drawing. F
Worksheet 1
Re-arrange the jumbled words to form words related tocomputer.
1 HERADAWR …………………………… 2 SCION ……………………………
3 SETFORWA …………………………… 4 BASKTAAR ……………………………
5 ETPDKSO ……………………………
Who am I ?
Answer 1.folder 2.file 3.start 4.home 5.Quick access toolbar
1. I am used to store a group of files.
2. I am a piece of information stored in the computer.
3. I am the button present at the left corner of the taskbar.
4. I am tab present in a paint window that has the cut and copy
options.
5. I am the toolbar that has the undo and redo buttons.

3. Q. Group the following items under the correct header.
Answer:
Hardware  Keyboard, scanner, printer
Software  MS window, MS office.
Hardware Software
Q1. How many itemsdo you have underhardware? ……………………………..
Q2. How many itemsdo you have under software?………………………………….
Chapter 3
Topic let’s learn KTurtle
1. Fill in the blanks with correct words.
Answer 1.three 2. center
3.file 4.new 5.abort
1. The KTurtle window has ……………………… main windows.
2. In the KTurtle main screen, the turtle sits at the ……………………. of the canvas.
3. To save an image, click the ………………… menu and select the Export to image (PNG)
option.
4. The ………………. Button on the toolbar clear the editor pane and you can type a different
set of instructions.
5. The ………………… button stops the execution.
2. Write T for true statement and F for false one.
Answer 1. F 2. F 3. T 4. T 5. T
1. You can change the shape of turtle.
2. The turtle sits in the editor pane.
3. You can change the execution speed of your program.
4. The save button is used to save the programing commands.
5. You can save the image that the turtle draws on the canvas.
Chapter 1
Topic: Operating System
Q1. Define Hardware.
Ans. Physical part of the computer is called hardware.
Q2. Define Software.

4. Ans. Set of instructions given to a computer to perform some task in a computer is called
software.
Q3. Define Operating system.
Ans. An operating system is a program that helps the computer hardware to work with
other computer software.
Q4. Define file.
Ans. it is used to store a group of files.
Q5. Define folder.
Ans. It is used to store a group of files.
Chapter 2
Topic: More about Paint
Q1. What do you use the Paint software for?
Ans. It is used to create drawings and edit photos.
Q2. Define cut option.
Ans. Cut option to cut the selected part of the drawing.
Q3. Define the use of copy option.
Ans. It is used to get a duplicate of the selected part of a drawing.
Q4. Define Undo and Redo button.
Ans. Undo command is used to reverse the last action performed.
Redo command is used to reverse the effect of the Undo command.
Chapter 3
Topic let’s learn KTurtle
Q1. Define canvas.
Ans. The area where the turtle makes your drawing.
Q2. How many parts of KTurtle main window?
Ans. Three main parts.
Q3. Write the name of main window parts of KTurtle?
Ans. Editor, Canvas and Inspector.

5. Q4. Which command is use to move the turtle in the forward direction?
Ans. The fw or forward command.
Q5. Which command is used to turns the head of turtle towards the right?
Ans. The tr or turnright command.