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Reasoning
Curated reasoning resources within math for curious kids and their grown-ups.
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Curated directory
2 resources · Reasoning
Open Middle
Challenging math problems with open-ended strategies, printable worksheets, interactive problems, and grade-level browsing.
6–18 · Free with paid options88
Visual Patterns
A visual collection of growing patterns that invites learners to describe, predict, and reason algebraically.
9–18 · Free87