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In this chemistry challenge, learners discover that many chemical reactions involve heat loss or gain.

This activity was designed for blind learners, but all types of learners can use it to investigate how different materials vary in their conduction of heat.

Learners investigate signs of a chemical reaction when they mix vinegar and baking soda. In addition to a gas being produced, learners also notice the temperature decreases.

In this activity, learners discover that our hands are not reliable thermometers.

In this fun hands-on activity, learners use simple materials to investigate evaporation. How can the evaporation of water on a hot day be used to cool an object? Find out the experimental way!

In this two-part activity, learners explore the properties of liquid crystals, which are responsible for why mood rings change color.