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Are you a Square or a Rectangle?
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In this activity, learners investigate whether more people are squares or rectangles. People with similarly sized heights and arm spans are classified as squares.

Symbol Search
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In this environmental activity (page 6 of the PDF), learners identify household products that are recyclable and explore the different types of recyclable plastics.

My Insect
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In this activity, learners use information gathered from a variety of sources to design and make their own insect.

Biodiversity and Evolutionary Trees
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In this interactive activity, learners analyze seashells to explore phylogeny and evolution. Learners identify similar and dissimilar seashells to create a phylogenetic tree.

Coma Cluster of Galaxies
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In this activity, learners will first learn the basics of galaxy classification and grouping.

Guess My Rule
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In this activity, learners play a guessing game to explore classification.

Guess My Rule
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In this math activity, learners play a game and try to be the first player to identify their partner's rule. Learners identify the rule by finding commonalities between three familiar objects.

Dichotomous Key
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In this classification activity, learners will learn one way of organizing plants and animals.
Pattern Families
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In this math activity, learners sort patterns into similar "families" or groups that have the same pattern, but different symbols.

A Touch of Class
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In this online game, learners test their skills of categorization.