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Learners use Duplo bricks to build antibodies with shapes that match model viruses.

Learners add acid rain (nitric acid) to two cups that represent lakes. One cup contains limestone gravel and the other contains granite gravel.

This is an online game about the complexities of farming. Learners will "draw" cards and make decisions about how to take care of their farm.

This activity about cryptographic techniques illustrates a situation where information is shared, and yet none of it is revealed.