Lesson 12.1 and 12.4 

https://www.educreations.com/lesson/view/third-lesson-12-1-12-4/43761980/?s=fwPaPz&ref=app

Lesson 12.2 and 12.3

https://www.educreations.com/lesson/view/third-lesson-12-2-12-3/43762014/?s=Jh6TKq&ref=app

Lesson 12.5

https://www.educreations.com/lesson/view/third-lesson-12-5/43919138/?s=gJ9oDq&ref=app

Lesson 12.6

https://www.educreations.com/lesson/view/third-lesson-12-6/43924258/?s=yqHHUa&ref=app

Lesson 12.7

https://www.educreations.com/lesson/view/third-lesson-12-7/43924514/?s=YwFIVj&ref=app

Lesson 12.8

https://www.educreations.com/lesson/view/third-lesson-12-8/44000310/?s=gmdM5O&ref=app

Lesson 12.9

https://www.educreations.com/lesson/view/third-lesson-12-9/44027364/?s=1us8Yi&ref=app