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    Translocation of Nutrients in the Phloem: Dixon's Paradox
    This module introduces the Dixon equation in the context of understanding nutrient transport through sieve tubes. It is intended for an introductory biology audience.
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    Efficiency of ATP Prodution
    This module introduces the efficiency of ATP production in the context of understanding glycolysis and endergonic reactions. It is intended for an introductory biology audience.
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    Beanbag Toss (Grades 6-8)
    The classroom lesson presents students with the task of developing a fair--yet challenging--beanbag toss game.
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    Emergency Water Supply (Grades 6-8)
    This classroom lesson presents students with the task of determining how much water their school would to store in case of an emergency disaster.
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    Building the Best Playground (Grades 3-5)
    The classroom lesson presents students with the task of developing an optimal design for a school playground.
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    Accelerated Reader (Grades 3-5)
    This classroom lesson presents students with the task of designing a reading schedule to help them reach an overall (total word) reading goal for the year.

    Keywords: rates

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    3-050-CometOrbitalMechanics-ModelingScenario
    The broad goal of this activity is to use a basic numerical method to approximate the solution of an initial value problem. In this particular case, we will use Euler's method to help model the...
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    9-010-TravelingWave-ModelingScenario
    Students are taken through a traveling wave analysis of a porous medium model. While the starting point is a nonlinear partial differential equation model, after a change of variables, students...
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    3-044-DeepWell-ModelingScenario
    We drop a pebble in a deep well. Given the time elapsed from release of the pebble until we hear the splash determine the depth of the well.
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