Abstract: The rainbow number of a set of integers $X$ for a given equation $eq$ is the smallest number of colors $r$ such that every exact $r$-coloring of $X$ admits ...

If a middle-school student cannot quickly recall basic facts like 2 + 3 = 5 or 6 x 3 = 18, this will likely slow him down when working on a more complex problem. For many people, math facts come ...