-
The history of the bicycle: Overview
This article covers the evolution of the bicycle in five steps, from balance bike to bicycle.
- Laufmachines and hobby horses
- Pedals on the balance bike
- Higher, faster and... more dangerous
- the tricycle
- A safety on pneumatic tires
Translated by
Article -
CO₂ Calculator for Schools
Schools for less CO₂ is a free digital tool that makes it possible to monitor your school's CO₂ emissions and use them for climate education.
The students perform measurements and enter the data in the CO₂ calculator. This converts …
Translated by
Website (4)