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    NCTM Illuminations
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    This math meets ecology lesson provides hands-on experiences with mixing oil and water, provides surface area information about the 2010 oil spill in the Gulf of Mexico, and gives learners...

    $1 - $5 per group Ages 8 - 11 1 to 2 hours
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    NCTM Illuminations
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    In this three-day (or three-part) math lesson, learners represent the number eight in writing and with a variety of manipulatives related to spiders. Learners construct sets of eight by cutting...

    $10 - $20 per group Ages 4 - 8 2 to 4 hours
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    NCTM Illuminations
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    In this math meets life science lesson, learners measure the circumference of local trees in order to calculate diameters. Learners use this information and a growth rate table to estimate the age...

    1 cent - $1 per group Ages 8 - 14 45 to 60 minutes

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