Despite Common Core for State Standards, a multitude of initiatives, best practices, differentiation etc. math is challenging for most students. A major reason, from what I have encountered, is that math is often taught in piecemeal fashion with an attempt at rote memorization of an overabundance of rules. I compiled many of these rules into a single document.
Imagine our kiddos receiving special education services who already have trouble grasping various topics having to memorize all these rules and mnemonics.