What does one semicircle, two parallelograms, three triangles and a rectangle add up to?

Addition doesn't have to be puzzling—practice finding sums with these second- and third-grade puzzle boxes!

Shape up those problem solving skills with a fun block puzzle activity, comparable to tangram puzzles!

Put your addition skills to the test with these puzzle boxes for second and third graders!

Put your addition skills to the test with these puzzle boxes for second and third graders!