A teacher recently asked me a question: “What do I do with the student who is strong enough in his math concepts, but he has no idea about Singapore Math approaches like number bonds, and he starts our school late in the year?” For her and other teachers in the same boat, I’m making this “cheat sheet,” which is targeted at elementary school children who start mid-year in Math in Focus or Primary Mathematics. 1. Number Bonds Number bonds show the ways in which numbers relate to each other. They can also be thought of as “part-whole” pictures, in which you…