在以下频道推出： PlayKids、Hopster
第 1 季，第 2 集: Machines are all around us all the time and SuperHands is eager to show us one of his favorite kinds of machines; a catapult lever! In this exciting episode of SuperHands Science from PlayKids, will teaches how a lever works and how we use lever’s to do work and have fun everyday! And best of all, we are going to learn how to build our very own catapult lever.
Kids & Family · 2015年1月1日 · 4 分钟