Area of a Rectangle
This You tube clip is very corny but it might help you remember. See if you like the song!
Area of a Square
It is the same as a rectangle but you might like to watch so you really remember. Again you will laugh at her voice but her teaching is spot on.
Area of a Triangle
This girl must be your age and she is fantastic in this clip. I am sure you could all make your own clips and I could add them to our blog.
Area of a Circle using radius and diameter. Both of these videos are worth watching to help you understand area of the circle.