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In this math lesson, learners apply the concepts of ratio and proportion to determine the length of the Statue of Liberty's torch-bearing arm.

In this engineering activity, learners examine bicycle mechanics and gear ratios. Learners determine which gears will help them bike a set course in the shortest amount of time.

Choose a recipe to double (or triple, quadruple, or halve). Show everyone the recipe and engage them in figuring out: How much will we need to increase the recipe to feed everyone?

This game teaches ratio and proportion by having learners make "salads" that combine three types of beans in different combinations.

In this activity, learners watch a video to learn about a couple who built a home out of shipping containers in Brooklyn, New York.