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In this kinesthetic activity, learners move pom-pom "ions" across a membrane to simulate how an action potential is propagated along an axon.

You just ate a big meal and feel heartburn coming on. You take an antacid and feel better. Why? Heartburn is caused by stomach juice (an acid) burning the esophagus.

In this chemistry challenge, learners systematically investigate which combination of four solutions produces a deep red color.

This activity was designed for blind learners, but all types of learners can play this game to learn about the major polyatomic ions (an ion that consists of two different elements).

Learners are challenged to create solutions that conduct electricity and make a buzzer buzz (or an LED light up).