240 Unifix(R) Cubes

My daughter went from counting on her fingers to grouping these cubes into tens without me prompting her. They snap together tightly enough that her towers don't topple mid-lesson.

The 240 count means my twins can each build their own graphs without fighting over pieces. They snap together snugly, so the towers actually stay up when my 4-year-old counts them.

The cubes snap together snugly enough that my kindergartner can build towers for counting without them falling apart mid-count. We've used them for sorting by color and simple graphing, and they've held up well to daily tossing around.