Use the video links below for review or pratice.
https://www.youtube.com/watch?v=AJx06UbpQxU
https://www.youtube.com/watch?v=-B-i-g6cjic
https://www.youtube.com/watch?v=c4ALIwoXXe0
https://www.youtube.com/watch?v=xbvzB_8Wji8
HW: WS 4.9 do the front side (1 - 10)