This website will guide you to calculate the third angle of a triangle.
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AAA Math
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This website will help classify triangles based on the sides. Includes equilateral, isosceles, and scalene.
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AAA Math
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This is an interactive lesson on area and perimeter of rectangles. The step by step lesson explains how to find both area and perimeter in a real life situation. Then, the student is shown a series of rectangles and is asked to find the area and perimeter of each.
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Math Playground
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The page starts with an explanation of how the protractor works. The student is then given a series of 10 angles to measure with a virtual protractor. The site checks the students answer.
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Math Playground
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Estimate the angles between your fingers when you expand your hand.
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Figure This! Math Challenges for Families (NCTM)
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