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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 compare and contrast their own skin (including the area covered) with that of an orange.

In this activity on page 15 of the PDF, discover how materials and physical forces behave differently at the nanoscale.

Learners design their own experiment to investigate how pollution diffuses through ground material.

In this physical sciences activity, learners explore how passive solar design increases energy efficiency.

In this environmental health activity, learners investigate their own vital lung capacities.

This hands-on activity demonstrates how a material can act differently when it's nanometer-sized.

In this activity (page 4), learners work in groups to plan and build large structures using recyclable materials they have brought from home.