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Devices around us

Computer Science · Class 3

GG3-T06-01 · GG3-S06-01

This topic comes from GayaGnan's Class 3 catalog. It is generic, not an official board syllabus: check your board's book for the exact chapter.

1 ✨ Spark

How many machines with a screen or buttons can you find in your home right now?

Think about this for a moment before you start.

2 🧊 3D Explore

Turn the scene, tap the objects and answer. Easy, Medium and Challenge are the three checkpoints.

💻 Devices around us

⭐ 0

3 📖 Explain

Devices are machines that help us do work: a TV shows programmes, a phone lets us talk, a calculator works out sums and a computer does many jobs.

Some devices take information in (keyboard, mouse, microphone) and some give information out (monitor, printer, speakers).

🇮🇳 Example from India

At a railway station, a ticket machine takes in money and gives out a ticket; a big screen shows train times.

⚠️ Common mistake

✗ A computer can think on its own.
✓ A computer only follows the instructions people give it.

📒 Glossary

device
a machine that does a job
input
information going into a device
output
information coming out of a device

4 ✍️ Practice

Play Medium and Challenge in the 3D scene. The bars show how many you got right the first time.

🌳 Medium 🏆 Challenge

My mastery (right first time / played)

  • Easy0 / 0
  • Medium0 / 0
  • Challenge0 / 0

5 🏡 Real-life task

Try this at home or at school, then check the suggested answer.

Scenario Your grandmother wants to see photos of your school trip. Which devices could you use?

Show a suggested answer

A phone or tablet to show the photos on its screen, or a printer to print them on paper.

🧪 Try this activity

Make a list of devices at home and school. Mark which ones take information in and which give it out.

6 💭 Reflect

Think, then answer in your own words. Your notes stay on this device.

Observation In the 3D scene, look at each device. Which ones have screens, and what do the screens do?

Show a suggested answer

The monitor and tablet have screens; they show pictures and words, so they give out information.

Explain / create Teach a friend the difference between input and output using a keyboard and a monitor.

Show a suggested answer

When you press keys (input), the letters appear on the monitor (output).