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physics and technology · lower and upper primary
Gear train
A Koumio® board about gear ratios.
An interactive exhibit where children spin six cogs on five axles with their own hands. Animals race around the rims to see which gets round first.
40 × 60 cm
Dimensions
Czech Republic
Made in
Maintenance-free
Operation
How it works
What happens at the Koumio® board
Children experience the rule first, try several variants and only then name what they have discovered. The gear train naturally ties physics, technology and mathematics together. It shows that the world of machines is not abstract — it is tangible, understandable and beautiful.
Curiosity questions
Keep going — scan the QR code
Every Koumio® board comes with simple instructions and a closing challenge that leads the child to use what they have just found out. Scanning the QR code opens the solution and follow-up questions.
What children take away
The principle of gearing and mechanical advantage
How motion passes from one wheel to the next
How wheel size affects rotation speed
Understanding how direction of motion changes
Logical and spatial thinking
For public spaces
- Dimensions
- 40 × 60 cm, ready to hang straight away
- Material
- beech plywood, steel
- Mounting
- against removal and theft
- Manufacture
- in the Czech Republic
One thing left — to come and look at yours
The proposal is free of obligation and takes us an hour on site.