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Two-handed
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Eye-hand coordination
With this small, cleverly designed connecting piece between 2 soft drink bottles you can make your own tornadoes visible as a water vortex in the bottle.
The bottom bottle is filled with water, the top one remains empty. Now the two bottles must be turned over at the same time. So work well together with both hands.
To create a tornado, the water in the bottles must be set into a rotating motion. This also requires some skill and feeling, but the effect is a wonderful reward, which, after the water has completely flowed into the bottom bottle, immediately requires repetition.
With this adapter you can also build an hourglass.
Regular price
€4,50
- Not satisfied within 14 days? Money Back.
- Free shipping on orders over €100
- Shipping costs NL 6.75 euros, EU 9.95 euros
