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Explanation shows complete understanding of the mathematical concepts used to solve the problem(s).
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Explanation shows substantial understanding of the mathematical concepts used to solve the problem(s).
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Explanation shows some understanding of the mathematical concepts needed to solve the problem(s).
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Explanation shows very limited understanding of the underlying concepts needed to solve the problem(s) OR is not written.
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Uses complex and refined mathematical reasoning.
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Uses effective mathematical reasoning
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Some evidence of mathematical reasoning.
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Little evidence of mathematical reasoning.
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Student always listens and follows directions and only uses manipulatives as instructed.
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Student typically listens and follows directions and uses manipulatives as instructed most of the time.
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Student sometimes listens and follows directions and uses manipulatives appropriately when reminded.
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Student rarely listens and often "plays" with the manipulatives instead of using them as instructed.
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All problems are completed.
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All but one of the problems are completed.
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All but two of the problems are completed.
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Several of the problems are not completed.
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90-100% of the steps and solutions have no mathematical errors.
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Almost all (85-89%) of the steps and solutions have no mathematical errors.
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Most (75-84%) of the steps and solutions have no mathematical errors.
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More than 75% of the steps and solutions have mathematical errors.
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Typically, uses an efficient and effective strategy to solve the problem(s).
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Typically, uses an effective strategy to solve the problem(s).
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Sometimes uses an effective strategy to solve problems, but does not do it consistently.
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Rarely uses an effective strategy to solve problems.
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