The University of Arizona: No Tricks, All Treats to Strengthen Number System Fluency Grades 5-9(IMPACTS-MS)
In learning to understand the rational numbers as a number system in Grades 6–8, students build on two important conceptions which have developed throughout K–5. The first is the representation of whole numbers and fractions on the number line, and the second is a firm understanding of the properties of operations on whole numbers and...
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