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"Thinking Blocks is a suite of learning tools designed to help students solve math word problems accurately and efficiently. Using brightly colored blocks, students model mathematical relationships and identify known and unknown quantities. The model provides students with a powerful image that organizes information and simplifies the problem solving process. By modeling increasingly complex word problems, students develop strong reasoning skills which will facilitate the transition from arithmetic to algebra."

Scaling challenges nearly always come down to the same problem: the difficulty of spreading something good from those who have it to those that don't - or at least don't yet. It is always, in other words, the problem of more.