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    Utah Education Network
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    In this math lesson, learners use fruit to learn about proportions and percentages. Learners compare the weights of the edible and non-edible portions of fruit. Learners practice using different...

    Ages 11 - 14
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    Twin Cities Public Television
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    This activity (on page 2 of the PDF) is a full inquiry investigation into using indicator species to assess the health of an environment. Groups of learners will collect as many frogs as they can...

    Ages 8 - 14
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    The Exploratorium
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    In this activity, learners use rice grains to model the composition of the atmosphere of the Earth today and in 1880. Learners assemble the model while measuring percentages. This activity also...

    Ages 11 - 18
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    IEEE
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    In this activity, learners explore accuracy and precision. Learners work in teams to design and build a “robotic basketball player” for the World Robot Basketball League (RBL) that can accurately...

    Ages 8 - 18
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    Twin Cities Public Television
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    In this activity, learners conduct a waste audit and use their findings to implement a plan for reducing trash. Learners measure trash, sort by categories (compostable, recyclable, etc.) and...

    Ages 8 - 14
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    The Exploratorium
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    In this activity, learners calculate the percentage of oxygen in the atmosphere by using steel wool's ability to rust. Learners measure the volume of a test tube with a small amount of steel...

    Ages 11 - 18
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    PBS
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    In this math lesson, learners apply the concepts of ratios and percentages to the distribution of letters contained in a box of Alphabits® cereal. Each learner is given a sample of cereal from the...

    Ages 11 - 14
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    The Exploratorium
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    In this activity, learners create a model using metric measuring tapes and atmosphere composition data. Learners will investigate the major components of the atmosphere (nitrogen and oxygen) as...

    Ages 11 - 18
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    NCTM Illuminations
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    In this math lesson, learners use two colors of beads to form two different percent mixes, and then form a final mix using scoops from the two mixes. From this, learners will develop and use a...

    Ages 14 - 18