Area of Polygons
Videos
Decomposing Figures - http://learnzillion.com/lessons/1058-find-the-area-of-a-parallelogram-by-decomposing
Right Triangle - https://learnzillion.com/lessons/1883-find-the-area-of-a-right-triangle
Non-Right Triangles - http://learnzillion.com/lessons/1059-find-the-area-of-nonright-triangles-by-composing-a-parallelogram
Interactive Videos
Decomposing Figures -
http://studyjams.scholastic.com/studyjams/jams/math/measurement/area-irregular-figures.htm
Parallelogram - http://studyjams.scholastic.com/studyjams/jams/math/measurement/area-parallelogram.htm
Irregular Figures - http://studyjams.scholastic.com/studyjams/jams/math/measurement/area-irregular-figures.htm
Decomposing Figures - http://learnzillion.com/lessons/1058-find-the-area-of-a-parallelogram-by-decomposing
Right Triangle - https://learnzillion.com/lessons/1883-find-the-area-of-a-right-triangle
Non-Right Triangles - http://learnzillion.com/lessons/1059-find-the-area-of-nonright-triangles-by-composing-a-parallelogram
Interactive Videos
Decomposing Figures -
http://studyjams.scholastic.com/studyjams/jams/math/measurement/area-irregular-figures.htm
Parallelogram - http://studyjams.scholastic.com/studyjams/jams/math/measurement/area-parallelogram.htm
Irregular Figures - http://studyjams.scholastic.com/studyjams/jams/math/measurement/area-irregular-figures.htm