Mathopia Farm

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Use farm plots and crops to learn more about fractions. 

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Juice Containers

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Using models rather than algorithms for computing with fractions.

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Camera Lens Aperture

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Looking at the inversely proportional relationship between camera aperture and f-stops in photography.

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Inversely Proportional

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Exploring inverse proportion within the topic of speed and time relationships.

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Math and Cookies

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Looking at proportion in the context of a friendly argument over sharing cookies.

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Volume and Pressure

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Looking at how inverse proportion relates to science.

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Cliff or Evelyn

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Address the role of place value in the algorithm for dividing decimals.

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Two Interpretations of Decimal Division

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Creating story problems using two different approaches to division.

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Partial Products & Decimals

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Understanding how the algorithm for multiplying decimals really works.

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Decimals as Arrays

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Representing decimal products using area models.

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