Authentic Inquiry Maths: 5 Ways With Multiplication

I once knew a 7th grade math teacher who hated/didn't understand the lattice multiplication that many of her students liked to use. She hated it so much, in fact, that before she let the students move on to any other math, they all had to learn to multiply "her way." Ugh. This post shows five different ways to multiply. Not all are equally efficient, but each has a way of building good number sense for multiplication.