Investigation 3
Problem 3.1
https://www.youtube.com/watch?v=bwIOKY1esU8
Problem 3.2
https://www.youtube.com/watch?v=3pMyFoPrIL4
Problem 3.3
https://www.youtube.com/watch?v=_Hj1Ha3SH6s&t=32s
Problem 3.4
https://www.youtube.com/watch?v=BzFZ8WE7t5Y&t=46s
Investigation 4
Problem 4.1
https://www.youtube.com/watch?v=kxQAiEs1Kws
Problem 4.2
https://www.youtube.com/watch?v=Gwn1AA6tqAM
Problem 4.3
https://www.youtube.com/watch?v=NhV7N5NExZk
Problem 3.1
https://www.youtube.com/watch?v=bwIOKY1esU8
Problem 3.2
https://www.youtube.com/watch?v=3pMyFoPrIL4
Problem 3.3
https://www.youtube.com/watch?v=_Hj1Ha3SH6s&t=32s
Problem 3.4
https://www.youtube.com/watch?v=BzFZ8WE7t5Y&t=46s
Investigation 4
Problem 4.1
https://www.youtube.com/watch?v=kxQAiEs1Kws
Problem 4.2
https://www.youtube.com/watch?v=Gwn1AA6tqAM
Problem 4.3
https://www.youtube.com/watch?v=NhV7N5NExZk