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In this optics activity, learners discover basic lens-making techniques by using a tennis ball to make a lens out of ice.

In this engineering activity, learners design their own board games.

In this activity, learners explore how engineers develop pipeline systems to transport oil, water, gas, and other materials over very long distances.

This is an activity (located on page 3 of the PDF) about the mixture of materials in bone and how they affect its strength.

In this thought-provoking activity, learners plan a hypothetical project to build and operate wind turbines in their community.

In this field study, learners discover how to collect data in the field and how their efforts can help certain animals, specifically, amphibians.

MarsBound! is an engineering simulation activity in which learners use realistic techniques to plan a mission to Mars.