3-4: Learning Goals
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3-4-1: What Do We know? What Can We Estimate?
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3-4-2: Using π
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3-4-3: Around the Running Track
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3-4-4: Measuring a Picture Frame
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3-4: Lesson Synthesis
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C=2πr
3-4: Learning Targets
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3-4-5: Circumferences of Two Circles
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Circle A has a diameter of 9 cm. Circle B has a radius of 5 cm.