Things (numbers, variables, expressions) on either side of an equal sign are the same. If kids can really understand this idea, they won’t stumble when they get to Algebra and have to start solving for x. If they can grasp the big ideas behind simple concepts like Equality, they’ll be much more fluent with higher level math concepts.

I wanted to practice introducing these ideas to my (then) 3 year old. I found some things we had at home and made up a very simplistic balance beam. Using egg carton pieces, a paper clip flattened out, and a toilet paper tube shaped into a triangular prism, I asked N to try to make it balance (stay level) using different amounts of cotton balls on each side. Read more…