Lesson 1: Revision
Tejas and Jyoti have to conduct a quiz on what they have learnt in their computer class. They come to Moz to discuss and set up an interesting quiz using the text editor on the computer.
Moz : What is the first step to create a quiz on the computer?
Tejas: Open Text editor!
Jyoti: No, we have to first switch on the computer, login and then open the text editor.
Tejas: I have switched on the computer but I can’t see anything on the monitor. Moz: Let us see if the monitor is connected to the CPU and the toggle switch is on. You should also check if all the input [mouse, keyboard] and output [Monitor, printer, speaker] devices are connected.
Jyoti: Yes, all devices are connected. I can now enter my username and password and start the text editor.
Tejas: The title of the quiz can be written in capital letters by using caps Lock key.
Moz: Let us revise the topics that you have learnt so far.
Jyoti: It will be fun to create different types of questions for the quiz.
1. Input and Output Devices [ come back to underline ]
Input
- Input devices allow us to send information to the computer.
- Input to a computer is usually given by clicking the mouse or typing on the keyboard.
Output
- Output devices allow us to receive information from the computer
- Output may be printouts from the printer, sounds on the speaker, or images on the monitor.
CPU
- CPU controls all the connected input and output devices.
- Any device has to be connected to the CPU to receive or send information.
- The CPU is neither an input nor an output device. It takes the information given by the input devices, does the work and sends the resultto the output devices.
2. Computers and your health
Usage and Precautions of computers:
Use computers for a maximum of one hour per day in two sessions.
Each session can be of maximum half an hour.
Do not touch power cables and see that they are insulated.
Do not put fingers or objects into the power socket and the sockets/outlets on the CPU meant for external devices.
Exercises
Hand exercises
Just the pictures of the exercises here please
Neck exercises
Just the pictures of the exercises here please
Exercise to keep body fit
Just the pictures of the exercises here please
- Posture to be observed while working at the computer
swathi : page 26 class 2 posture picture
3. Activities using a Mouse:
Folders are used to organize files on a computer.
Folders help in keeping related files together, to allow us to find them easily.
Desktop has activity icons and folder icons.
The icons can be rearranged by using the drag and drop action of the mouse.
New folders can be created and also moved to a different location on the desktop.
Files can be moved into folders using Drag and Drop.
4. Activities using keyboard
Use the following Keys on the keyboard:
Caps lock to type an alphabet in upper case.
Backspace to delete a letter before the cursor position.
Delete to delete the letter at the right of the cursor position.
The four directional arrow keys, page up and page down navigational keys to navigate the cursor in the text file.
Making changes to the written text is called Editing.
5. Text Editing
Use file options in the tool bar of text editor:
Open to open an existing file
Save to save the file after completing the worksheets.
Print to print the file.
Use the following editing options in the toolbar of text editor:
Copy and paste to copy the selected text and paste it at a new location.
Cut and paste to cut the selected text and paste it at a new location.
Undo to correct an action and redo to restore an action
6. Startup/Shutdown, Login/logout
Start up of a computer
Computer is a machine which runs on electricity.
Parts of a computer like CPU, Monitor, Mouse, keyboard require electricity.
To start a computer switch on the power supply to the computer and then the 'Power' button on the CPU.
Press the toggle switch to on the monitor.
Booting is the sequence of actions done by the computer while starting.
Authentication – Login and Logout
When a computer is shared by more than one person, all the users are given a user name and password to access it.
The username is also called login
The user name and password ensures that only those whohave permission to use the computer are using it.
When both the user name and password are typed in correctly, you can login to the computer.
Logoutis the action of closing one’s use of the computer.
Shut down of a computer
Shut down is the action of closing all the activities and stopping the computer.
The electric supply to the computer should be switched off only after shutting down the computer.
[ Gif of a quiz question paper on the monitor with tejas and jyoti typing ]
The quiz questions typed by Tejas and Jyoti are checked by Moz.
Moz: There are some spelling mistakes in the text and some questions are repeated, how can you correct them?
Tejas: We can use the arrow keys to move to different locations in the document. The backspace and delete keys can be used to make changes to the word spellings.
Moz: The quiz paper looks interesting. Do not forget to save it with an appropriate name on the desktop.
Tejas: We also have to print to give the quiz to all the students.
Jyoti: By creating a quiz , we have generated a worksheet !
Moz: Now that you have finished setting up a quiz paper, do you want to logout?
Jyoti: I will logout after organizing the desktop. I will create new folders and use drag and drop to move the files to folders.
Tejas: I will login and use Paint application to create an invitation for the quiz.
Moz: You have been using the computer for a long time now. Shut down the computer .
Moz: Note that you followed a series of steps to create this quiz. We will llearn more about step wise thinking in the next class. Chin Chinaki.
Lesson Outcome:
Students will be able to:
- Identify input and output devices.
- Use drag and drop to arrange files and icons on the desktop.
- Write and edit text.
- Practice exercises to remain fit while using computers.
Work Sheets
- Given are some devices which are connected to a computer. Mittu the Monkey doesn't know which are the input and output devices. Can you help her by circling the input devices with Red and output devices with Blue colour.
Give the figures of printer, keyboard, mouse, speakers and monitor and an icon of Mittu monkey.
- State whether true or false.
a)A mouse is the output device of a computer.True / False
b)Folders are used toorganize files on a computerTrue / False
c)Caps lock key is used to type alphabets in lower caseTrue / False
d)Booting is the sequence of actions done by the computer while starting. True / False
e)Password should be kept as a secret. True / False
- Kichu the Rabbit wants to fill the crossword puzzle. Can you help him?
Icon of Kitchu the Rabbit
ACROSS:
- You use ______to type an alphabet in upper case.
- ______erases the letter at the right of the cursor position.
- The four directional ______help you to move the cursor left/ right /up and down.
DOWN:
- ______allows you to scroll down one page.
- ______key is used to delete a letter before the cursor position.
- Deepa wants to move a file from the desktop to a folder. Can you guide her by numbering the steps in the proper order.
Figure of third question in the Class 2/ Lesson 4.
- To keep body fit and healthy we do exercises. Som is doing Kehuni Naman. Draw the next step what he should do.
Figure of kehuni naman from class 2 (the boy's figures: first two in 2 boxes and leave third box blank)
Activity 3.1
Open Educational suite GCompris and play the following games:
1. Tangram puzzle game: Select the tangram to form. Select an item and drag around it to show the rotation you want. Once you've shown what shape you want, the computer will create it. If you need help, click on the shape button, and the border of the shape will be drawn.
2. Super brain: Click on the items until you find the correct answer. Then, click on the OK button in the control bar. In the lower levels, Tux gives you an indication if you found a hiding place by marking the item with a black box. You can use the right mouse button to flip the colours in the opposite order.
3. A sliding block puzzle game: Each car can only move either horizontally or vertically. You must make some room in order to let the red car move through the gate on the right.
Explore
- What are the other applications that allow you to write text on a computer besides the text editor?
- Give a same name to two files within a folder and check what happens. Explore how you can change the name of the file without opening the file.
Teacher’s corner 3.1
- The first lesson of class III is a revision chapter. It is important that students completely learn the Level II contents before they start new topics. Ensure that you give adequate time to hands-on practice of what they have already learnt.
- Ask the students to tell the various activities that they did with computers. They will mention input output devices, using text editor, starting the computer and entering the user name and password. Ask them what are the input and output devices of the computer. Summarize the discussion by briefly mentioning how each computer part plays an important role. Revise how to start a computer session and ask a student to demonstrate it to the class. Emphasize the importance of username and password and that it is essential to enter them correctly.
- Ask the students to look at the icons of the desktop and identify the folder and activity icons. Revise the functions of the folder and how it helps to organise the files on the computer.
- Open a text editor and demonstrate the various edit functions. Give a short assignment to the students that allow them to practice the uses of various keys (caps Lock/backspace/delete/navigational). Tell them that they will learn how to colour the text and use different fonts this year.
- Revise the various exercises they learnt to keep fit while they used the computers for longer time. Ask the students to demonstrate these in the class. Emphasize the importance of keeping the computers clean, avoiding food/drinks near computer and sharing computers with their classmates.
Further reading: