A directory of useful objects found on the web for teaching Maths.
http://thewessens.net/ClassroomApps/Main/factorexplorer.html?topic=number&id=0
Interactive, Publisher, The Mathenæum
For each number, visually create as many rectangles as you can - as you go, count the number of factors found.
14 September 2014 Edit: 14 September 2014
User submitted, thanks to Ken Wessen
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