Computer Basics - Grade 3 Computer Science Worksheet 21 - Free Printable

Download this free printable Computer Basics worksheet for Grade 3 Computer Science. Perfect for practice, homework, and classroom use.

Grade 3 Computer Science practice

This printable Computer Basics worksheet is part of the free WizKidsHub Grade 3 Computer Science collection. Print it at home or in the classroom for extra practice.

What this worksheet teaches

• Build vocabulary for basic computer terms like file, folder, icon, and cursor.
• Recognize simple input and output devices and sort them correctly.
• Describe the steps of starting up, using, and safely shutting down a computer.
• Identify the main parts of a computer - monitor, keyboard, mouse, and CPU - and explain what each one does in simple terms.

How to use this worksheet

Start by asking your child to name every computer part they can see in the room before they read a single question - this shows you what vocabulary is already secure and what is still guesswork. Then work through the sheet. Children at this age often mix up 'monitor' and 'computer', so when that happens, tap the screen and then the box or laptop base so the difference is physical rather than verbal.

Sample questions from this worksheet

1. MCQ: Computers at home can be used to ______.
2. MCQ: Where are computers used to protect a country?

Frequently asked questions

Why does my child keep calling the monitor 'the computer'?

This is the single most common Grade 3 mix-up, because the screen is the part children actually look at. Point to the screen and say 'monitor', then to the laptop base or tower and say 'the computer that does the thinking'. After two or three repetitions with a real device, most children stop swapping the words.

My child uses only a tablet at home. Will the mouse and keyboard questions confuse them?

They may take a little longer, and that is expected. Tablet-only users often have no mental picture of a cursor. Let them move a mouse for a couple of minutes before the worksheet, or draw an arrow on paper and slide it around to show what a cursor does.

Is there anything about online safety in this worksheet?

This sheet stays on parts, terms and devices rather than internet safety. If your child is already browsing, treat the vocabulary here as the groundwork - knowing what a file, folder and program are makes later safety rules such as 'do not open unknown files' actually make sense.