Free and Featured Standards
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Common Core: Addition, Subtraction (Grades 1-2)
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Common Core: Time and Money (Grades 1-2)
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Common Core: Multiplication, Division (Grades 3-4)
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Common Core: Fractions and proportions (3-4)
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NGSS: Engineering Design (Grades 3-5)
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NGSS: Earth and the Universe (Grades 2-5)
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