Class 3 Computer Science: Input and Output Devices

How this worksheet helps your child

• Builds confidence in core Computer Science concepts taught in Class 3 through repeated, varied practice.
• Aligned to CBSE and NCERT — questions mirror the pattern children see in school tests and unit assessments.
• Comes with an answer key so parents and students can self-check in minutes, without needing a teacher.
• Pitched at easy level — use it for daily homework, weekend revision or quick exam warm-ups.

About this worksheet

Welcome to our engaging Class 3 Computer Science worksheet focusing on Input and Output Devices! This easy practice worksheet is specifically designed for young learners following the CBSE curriculum, helping them build a strong foundation in understanding how computers work. At this stage, it's crucial for children to grasp the basic components of a computer, and identifying input and output devices is a key first step. This worksheet provides a fun and interactive way for students to recognise common devices and understand their fundamental functions. It's perfect for parents who want to support their child's learning at home or for teachers looking for a supplementary resource to reinforce classroom lessons, ensuring alignment with NCERT principles. By completing these exercises, children will develop a clearer picture of how we interact with computers and how computers provide us with information.

What your child will learn

• Identify common input devices used with a computer.
• Recognise various output devices connected to a computer.
• Differentiate between input and output functions of computer peripherals.
• Understand the basic purpose of different computer hardware components.
• Practice associating devices with their correct category (input or output).

Understanding the concept

Every computer, from the one you use at home to the large ones in offices, needs a way for us to tell it what to do, and a way for it to show us the results. This is where input and output devices come in! Think of input devices as the 'sense organs' for the computer. They take information or instructions from us and send it to the computer. For example, when you type on a keyboard, you are giving the computer input. When you move your mouse to click on something, that's also input. A microphone is another input device, converting your voice into data the computer can understand. On the other hand, output devices are how the computer 'talks back' to us. They show or tell us the results of its work. A monitor is an output device because it displays pictures and text. When you print a document, the printer is acting as an output device, giving you a physical copy. Speakers are also output devices, playing music or sounds generated by the computer. So, input is sending information *to* the computer, and output is receiving information *from* the computer.

Tips for parents & teachers

• Encourage your child to point out input and output devices they use at home, like a TV remote (input) or the TV screen (output).
• Go through each question together, asking your child to explain why they chose an device as input or output.
• Use real computer peripherals if available, to make the learning more tangible and hands-on.
• After completing the worksheet, create a game where you name a device, and your child says if it's input or output.
• Review other parts of a computer system briefly to provide context for these specific devices.

Topics covered

How to use this worksheet at home

Open the print view and use your browser's Print dialog to print on regular A4 paper or save as a PDF. Hand the printed sheet to your child (Class 3) and set a relaxed time limit — 15 to 25 minutes works for most Computer Science worksheets. When they're done, open the "With answer key" view and let them self-mark question by question. Re-print as many times as you need; the file never expires and there's no download limit.

Frequently asked questions

Is this Computer Science worksheet really free?

Yes — every workbook on WorkbookWala is 100% free to download and print. No login, no email, no paywall. We're free for students, parents and teachers.

Is it aligned to the CBSE / NCERT syllabus?

Yes. All Class 3 worksheets are built around the CBSE and NCERT pattern so they map cleanly to what your child is studying in school.

Can I print this worksheet at home?

Yes. Click "Open print view" and use your browser's Print dialog to print on standard A4 paper, or save it as a PDF for later. The layout is designed to fit cleanly without scaling.

Does it include an answer key?

Yes — click "With answer key" to print a version with answers included, so parents and students can self-mark in minutes.