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This lesson focuses on how materials behave differently as their surface area increases.

In this activity, learners mix milk, vinegar, baking soda, and water to create sticky glue. Use this activity to explain how engineers develop and evaluate new materials and products.

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

In this activity, learners create and reveal secret messages written with invisible ink! The invisible ink is actually a baking soda solution, and the magical revealing liquid is fruit juice.

In this Spanish-language chemistry activity, learners use simple materials to explore how fire extinguishers work to put out fires.