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In this geology activity, learners create a model using a mixture of salt and sand inside a CD case. When the case is tilted or inverted, the mixture dramatically sorts into a layered pattern.

In this sorting activity, learners play a game in which they try to identify the largest number of differences between two objects.

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

In this card game, learners make two sets of three cards that are alike. Learners must justify to the rest of the players why the three cards belong in each set.

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

In this math activity, learners sort patterns into similar "families" or groups that have the same pattern, but different symbols.