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This activity (on pages 16-23) lets learners measure each other's vital signs—the signs that help doctors understand what's going on in a patient body.

In this activity, learners explore the invisible infrared radiation from an electric heater.

In this activity, learners discover that one way to cool an object in the presence of a heat source is to increase the distance from it or change the angle at which it is faced.

Heat makes some materials expand, and it makes others shrink.

In this activity, learners make their own heat waves in an aquarium.

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

In two separate bags, learners mix water with Epsom salts and detergent.

This Exploratorium activity can be used in many contexts because geysers are great opportunities for learning about heat and temperature changes as well as geological/space science phenomena.

In this activity, learners create a biosphere in a baggie.

Learners build a simple solar oven from a shoebox, black construction paper, and aluminum foil. Over the course of a few hours, the oven heats up water enough to brew tea.