Kraul

On a boat trip with candlelight propulsion! The candle boat with thermoelectric drive and tea light from Exergia. The warmth of a tea ...

Ball made of 270 wooden parts and screw connections This wooden kit creates a 64 cm (!) ball or dome (hemispheres) based on the ideas of the ar...

LIGHT AND DARKNESS introduces the phenomena of light, shadow, mirrors and lenses in a playful way. The game begins with simple light and shadow ...

The Little Zodiac; Observe and experience stars, ages 12 and up The POCKET PLANETARIUM is an astronomical tool to illustrate the path of the...

Stirling engine with tea light drive Steam engines were the first engines that made difficult jobs easy for people. However, there were frequen...

Torus is made of 864 wooden parts and screw connections The torus is a well-known mathematical solid, others call it “doughnut”. This impressive...

WIND AND WEATHER are something very alive and fascinating to observe and understand. Why does the air move? How does wind come about and how...