Best definition

weapon of math instruction

something used to teach math.

protractor, pencil, compass….

all these are weapons of math instruction

weapon of math instruction: define #2

weapon of math instruction

The term, ‘Weapon of mass destruction’ repeated by a person with a speech impediment.

Thay, did you hear a weapon of math instruction was found in Iraq?

weapon of math instruction: define #3

weapon of math instruction

The quadratic equation, as defined by a t-shirt from Cal-Poly.

Crazy J got a “weapon of math instruction” t-shirt from a former student who now attends Cal Poly.