This video is one of a series (all 5 minutes and under) which align to the 5th Grade Common Core Math Standards. This particular video relates to 5.NF.4b "Find the area of a rectangle with fractional side lengths by tiling it with unit squares of the appropriate unit fraction side lengths, and show that the area is the same as would be found by multiplying the side lengths."
You can download this video and include it in your own blogs or class website. It is a useful tool for 'virtual teaching' to students at home, or educating parents in a dignified way, or using directly in your classroom with your kids.
Technical Note: This video is a (.swf) Flash file. It may be opened directly on most computers. An alternate method for opening the file is to right-click on your downloaded file, and choose 'Open With...' and select Windows Media Player.