They spend suppertime summarizing the story they read in ninth-grade English that day, or explaining how Newton's laws of motion work.

他们用晚饭时间总结当天用九年级英语读到的故事，或解释牛顿运动定律的工作原理。

Check out this example from their newest course — Scientific Thinking — you can change the size of the top ball, drag and drop the stack and visually learn about how motion works.

看看他们最新课程《科学思维》中的这个例子——你可以改变顶部球体的大小，拖拉并放置堆块，直观地了解运动的原理。