카트가 비어 있습니다.
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.
물리학
7 ~ 12 학년
저자: Stonawski Tamás
교정자: Dr. Sós Katalin
mozaLink
/웹 링크