In several of my earlier blog posts, I've written about Sketchpad activities that present factors and multiples in puzzle form (see, for example, When Factors Put on Their Dancing Shoes and When Factoring Gets Personal). Now I'd like to introduce … Continue Reading ››

Algebra classes devote considerable time to equations in a single variable before solving multiple equations in two or more unknowns. But just because elementary-age students are not familiar with algebraic symbolism doesn't mean they can't solve simultaneous equations, too! The mathematician and educator W. W. Sawyer makes a compelling argument for … Continue Reading ››