These Mental Tricks Will Have You Multiplying Faster Than Einstein Ever Could! « Mind Hacks ---- Wow, this seems to make some multiplication easier to do.
These would be great for teaching algebra equations. Could do something similar for integrated science and defining the variables for power, velocity etc.
Number Sense Craftivity - Students trace their hands, cut out & glue down onto paper, except for the fingers! Kids will love this because they will be using their paper fingers to count.