Bike Builder

Bike1 / 3

Parts0 / 14

This bike★★★

Stars0

Press “Let's build” to start.

The frame is ready — now it needs its parts! We'll ask for one part at a time. Find it in the parts box and drag it onto the bike. When its dot meets the glowing dot, it clicks into place.

How to play

👂
Listen for the part we ask for. Tap 🔈 to hear it read out.
🔍
Find it in the parts box at the bottom — the parts have no labels, so look closely.
✋
Drag it onto the bike. When its dot meets the glowing dot, it clicks into place.
🏷️
Every part gets its name on the bike, so the finished bike is a picture you can read.
🚲
Three bikes, more parts each time. Bike 1 has the 8 big parts, bike 2 adds 3 new ones and bike 3 adds 3 more. Parts you've met are asked by their job, then by just their name.
⭐
Three stars a bike. Three wrong parts or a hint use one up, but you always keep one.

What this grows

The names of a bike's parts, and what each one does — so a bike stops being one thing and becomes a machine you can explain. The crankset turns the chain, the derailleur moves it across the cassette, and the cassette turns the wheel.

Bike partsWhat each part doesLooking closely

For grown-ups

Fourteen real bike parts — from the headset to the derailleur — dragged onto a frame until it rides away.

Ages: 5+
A sitting: About 8 min
Practises: Bike parts, What each part does, Looking closely
Plays on: Phone, tablet or laptop — in the browser
Costs: Nothing. No sign-up, no ads

Bike Builder: put together your own bicycle

Bike Builder