Originally Posted by HowlerKarma
We used sidewalk chalk to construct a numberline, and then had DD step/count problems (both addition and subtraction)
Been there, tried that! The chalk number-line is still out there on our sidewalk! She had great fun jumping around on it and counting her way up, but absolutely refused to focus on addition games. (This is the kid who pesters me for addition problems on paper.)

It may just be a developmental readiness thing.