孩子有時stuck at a point. can not move on. 可以教他們慢慢理解這point
我孩子有時用math 嚴謹 想理解物理的有的approximation, 固體物理 或 plasma physics 有時
neglect this term, pick the other term
有時 totally opposite. Defitnitely frustrated sometimes.
孩子有時stuck at a point. can not move on. 可以教他們慢慢理解這point
我孩子有時用math 嚴謹 想理解物理的有的approximation, 固體物理 或 plasma physics 有時
neglect this term, pick the other term
有時 totally opposite. Defitnitely frustrated sometimes.