滾球挑戰 Roller Ball Challenge
到底滾筒軌道的角度與設計,跟乒乓球滾動的速度有何關係? What does the angle and design of the roller track have to do with the speed at which a table tennis ball rolls?
一起跟三年級同學來探索吧! Join us in P to find out!
錦田 錦田公立蒙養學校 科學實驗 探索