Kidy
How things work
How things work brings together 12 topics and 64 questions, from “Why does the light turn on?” to “How does a touchscreen know where you tap?”. Choose what your child is curious about today.
Choose a topic
12 focused sets make it easy to follow the questions your child is asking today. Each topic opens its own complete collection.
Around the home
- Why does the light turn on?
- Why does the doorbell ring?
- Where does water come from in the tap?
Things that go
- Why are wheels round?
- What makes a car go?
- Why do boats float?
Making sound
- Why does a bell ring?
- How do you make a drum go boom?
- Why does the phone ring?
Play and toys
- Why do some balloons float up?
- Why does a balloon float away?
- Why do magnets stick?
Simple machines
- How does a lever help you lift heavy things?
- How does a pulley lift a load?
- Why is it easier to push something up a ramp than to lift it?
Electricity and gadgets
- What is an electric circuit?
- How does a battery store power?
- How does an electric motor spin?
Flight and float
- What holds a plane up in the air?
- How can a heavy metal ship float?
- How does a helicopter hover in one spot?
Building strong
- How do bridges hold up so much weight?
- Why are triangles so strong in buildings?
- How do skyscrapers stand up so tall?
Computers and code
- How does a computer think?
- What is computer code?
- What is the internet?
Engines and energy
- How does a car engine work?
- How does an electric car work without petrol?
- How do solar panels turn sunlight into electricity?
Robots and AI
- What makes something a robot?
- How do robots sense the world?
- What is artificial intelligence?
Invisible signals
- How does music travel through the air to a radio?
- How does a map app know exactly where you are?
- How does a microwave heat food so fast?
Why "why" questions matter
Around four and five, children ask "why" about everything, and that is exactly how they learn. Every question is a small door into how the world works. A short, honest answer keeps that door open, while "because I said so" quietly closes it.
You do not need to be an expert. Answering "let us find out together" is often better than knowing, because your child learns that not knowing is the start of discovery. Each card gives you a simple answer to start from, then a question to keep the chat going.
menu_bookFor parents: Why does my child ask "why" all the time?When the questions run out, a story
Gentle stories where your child is the hero and Grow the friend.
Grow and the Stars
Read together →
Grow and the Magic Bridge
Read together →
Grow and the Cloud Full of Feelings
Read together →
Grow and the Wobbly Wheels
Read together →
Grow and the Nest of Words
Read together →
Grow and the First Day
Read together →
Grow and the Little Throne
Read together →
Grow and the New Star
Read together →
Grow and the Tooth Castle
Read together →
Grow and the Rainbow Plate
Read together →
Sources
Answers are simplified for young children and checked against child-friendly science references.