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Visitors prepare six solutions combining vinegar and ammonia that range incrementally from acid (all vinegar) to base (all ammonia).

In this activity, learners use two different techniques to estimate how many little things fit into one bigger thing.

In this activity, learners use measurement concepts to make models of what their body parts might look like if they were a snake or a chameleon.

In this quick activity (page 1 of PDF under SciGirls Activity: Exercise and Memory), learners will investigate what happens to bubble gum when it is chewed for 5-10 minutes.