@mekkaokereke @longobord I find this lack of algebra understanding common, and I feel like the solution is more algebra with a variety of pedagogy and no skipping. Lots of people say they understand things, but they really just memorize the mechanics. Algebra is the most important part of K-12 math curriculum, and schools should ensure maximum understanding even at the expense of boredom for "gifted" kids because it's very hard to tell when someone actually understands.