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Interactive Problem Solving – Thinking Blocks Thinking Blocks Interactive Tutorials – Model and solve word problems with addition and subtraction.  Online interactive tutorial. Second Grade and Third Grade. Online Word Problems with Addition and Subtraction within 20 – Challenge Word Problem Set 1 Word Problem Set 2 Word Problem Set 3 Word Problem Set 4…

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Interactive Problem Solving – Thinking Blocks Thinking Blocks Interactive Tutorials – Model and solve word problems with addition and subtraction.  Online interactive tutorial. First and Second Grade. How to use Thinking Blocks Tutorial  Online Addition Word Problems and Missing Addend  Word Problem Set 1 Word Problem Set 2 Word Problem Set 3 Word Problem Set…

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Making 8, 9 and 10 Lesson: Game Worksheet Students practice computation strategies and identify number patterns and relationships to make eight, nine, and ten in a variety of ways. Matching Number Pairs for Eight Matching Number Pairs for Nine Matching Number Pairs for Ten Sample Lesson Making 7, 8, 9, 10 Worksheet Sums up to…

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Operations & Algebraic Thinking While ten frames should start in Kindergarten, ten and twenty frames are great for developing mental math skills in all elementary grades. Dreambox – Simple Ten Frame game, but be ready, it goes fast! Using a two by five array, the Ten Frame supports the use of five as an anchor…

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