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In this design challenge activity, learners build a machine out of cardboard that runs smoothly and dependably. Learners must be precise to make sure their component works properly.

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 project, students explore how levers work, by making a puppet with moving limbs.

In this activity, challenge learners to design a roller coaster ride for a marble using cardboard and other simple materials.