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Finding Triangle Vertices
the problem, and all three students are involved in that experiment. Dana, by line 6, is ready for a different approach. In line 9, Dana suggests using the area formula not to check a point they pick at random, but to find the height of the triangle. At this stage, Dana, too, is …
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Solving Problems by Creating Expressions—Dollar Bills
mathpractices.edc.orgSolving Problems by Creating Expressions—Dollar Bills Mathematics Task Suggested Use This mathematics task is intended to encourage the use of mathematical practices. Keep track of ideas, strategies, and questions that you pursue as you work on the task. Also reflect on the mathematical practices you used when working on this task.
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Sum of Rational and Irrational Is Irrational
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mathpractices.edc.orgextending the properties of integer exponents to those values, allowing for a notation for radicals in terms of rational exponents. For example, we define 51/3 to be the cube root of 5 because we want (51/3)3 = 5(1/3)3 to hold, so (51/3)3 must equal 5. Math Topic Keywords: exponents, rational exponents, rules of exponents
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