浮沉鴨仔科學玩具DIY - YouTube 浮沉鴨仔科學玩具DIY 材料： 放滿水的膠樽膠鴨仔玩具(低部要有大孔) 圖釘2顆科學原理： 在樽內的膠鴨仔存有少量空氣。空氣容易被壓縮。當膠樽被 ...
Science Toys Make toys at home with common household materials, often in only a few minutes, that demonstrate fascinating scientific principles.
