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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.

In this activity, learners try to figure out who has their matching rock type by reading a description of their rock (no talking!).

This demonstration can be used to help learners visualize DNA by lysing (breaking open) bacterial cells on a slide and “stringing up” the DNA with a toothpick in less than one minute.

In this web-based activity, learners try to figure out who in an online chat room has their matching puzzle piece.