This article is part of the collection: A Decade in Review: Reflections on 10 Years in Education Technology. This op-ed is part of a series of reflections on the past decade in education technology.

Mathematicians love a good puzzle. Even something as abstract as multiplying matrices (two-dimensional tables of numbers) can feel like a game when you try to find the most efficient way to do it.

When it comes to teaching math, a debate has persisted for decades: How, and to what degree, should algorithms be a focus of learning math? The step-by-step procedures are among the most debated ...