math: Fun math trick and a visual representation of multiplication that actually makes sense and goes pretty quickly (aka students don't have to draw 25 groups of

Japanese Math on

Today is Pi Day, for obvious reasons. Pi is a Greek letter representing the ratio of a circle's circumference to its diameter, a mathematical constant. If a circle's diameter is one, its circumference is approximately Happy Pi day.

This perimeter song would be good even for my fifth graders-----I need to put this on SmartBoard or make an anchor chart. (didn't see it on the link but could be operator error.

Multiplication the Fast Way! Tables of 8 and 9 in your hands ~I heard this trick on the radio and it saved my life. Since then I've taught it to many other kids. I passed such a bad time at school