Din kurv er tom
Thirsty card trick
I bet I can balance a plastic card on the rim of a glass full of water, and I can even place some coins on the overhanging part of the card without the card tipping over.
Fysik
7 – 12. Klassetrin
Forfatter: Stonawski Tamás
Korrekturlæser: Dr. Sós Katalin
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