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In this activity, learners discover if carbon dioxide has an effect on temperature.

In this chemistry activity, learners use spaghetti to explore density and chemical reactions.

In this activity, learners construct and launch rockets using simple materials and their understanding of chemical reactions.

In this activity, learners use gumdrops and toothpicks to model the composition and molecular structure of three greenhouse gases: carbon dioxide (CO2), water vapor (H2O) and methane (CH4).

In this activity, learners explore the concepts of density and basic chemical reactions as they create a homemade lava lamp effect using water, oil, food coloring, and Alka-Seltzer tablets.

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

This is a highly visual demonstration that illustrates both the effects of density and chemical reactions.

In this activity, learners observe as soap bubbles float on a cushion of carbon dioxide gas. Learners blow bubbles into an aquarium filled with a slab of dry ice.