Publishers: Didax Educational Resources
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Nimble with Numbers, Grades 2-3 Engaging Math Experiences to Enhance Number Sense and Promote Practice — Leigh Childs
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Investigating Three-dimensional Geometry Grades 6 to 12 — Don Balka
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Unifix Mathematics Activities, Book 2 — Don S. Balka
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Mental Math Workouts, Book 3 — George Moore