1.觀看數課P104~P105~教學影片

https://www.youtube.com/watch?v=nYKwmg-yKoI

2.完成數課P104~P105

3.觀看數課P106~P107~教學影片

https://www.youtube.com/watch?v=wNSAPVa5iRM

4.完成數課P106~P107