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In this activity, learners work in teams to construct human lung models from small plastic beverage bottles and balloons.

In this environmental health activity, learners investigate their own vital lung capacities.

In this math lesson, learners practice estimation and measurement skills as they move from station to station calculating length, volume, weight, and area.

Learners place cut flowers in colored water and observe how the flowers change. The flowers absorb the water through the stem and leaves.

In this activity, learners explore color, light and shadow by creating their own puppets to hold in front of a light source.

In this activity, learners play NOAA's Carbon Tracker game and discover ways to keep track of carbon dioxide and other greenhouse gases in the world.

In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

In this activity, learners explore a scale by comparing objects, which look similar but have different weights. Learners predict and then measure the weights of various objects using a scale.

In this activity, learners create a model using metric measuring tapes and atmosphere composition data.

The objective of this inquiry-based lesson is for learners to gain an understanding of how increasing ocean acidity can affect the calcification of marine organisms.

In this activity, learners predict whether a ball on Earth or a ball on the Moon bounces higher when dropped and why.

This hands-on experiment will provide learners with an understanding of the issues that surround environmental cleanup.

In this activity, learners make water-walking critters using thin wire, and then test how many paper clips these critters can carry without sinking.

In this activity, learners discover how a cabbage juice indicator helps identify acids and bases, and how iodine indicates the presence of starch.

In this activity, learners work in pairs to measure each other's ankles with lengths of string.

In this activity, learners perform an experiment to find out what determines a flower's color.

In this four-part activity, learners explore light and sound through a variety of hands-on investigations.

In this demonstration, learners investigate mass, gravity, and acceleration by dropping a wooden bar with a balloon attached to its underside, a mass suspended from it by rubber bands, and a sharp-poi

Visitors mix urea with water in one flask and mix calcium chloride with water in another flask. They observe that the urea flask gets cold and the calcium chloride flask gets hot.

Visitors mix water and sodium bicarbonate (baking soda) in a large flask. They then add citric acid to the mixture and stopper the flask. The resulting reaction creates carbon dioxide gas.