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In this activity, learners experiment with creating various types of bubble solutions and testing which ingredients form longer-lasting bubbles.

In this activity, learners explore how the power of the sun can be harnessed to heat and cool a building.

In this invention challenge activity, learners create an indoor game for one or two people that gets you moving.

In this activity, learners test the rate of ripening fruit and vegetables and use a chemical to inhibit the ripening process.

In this activity (p.7-8 of PDF), learners examine fossil formation.

In this activity, learners explore how rescue devices are designed to aid professionals during emergency situations.

In this activity, learners explore how engineers design devices that can detect the presence of pollutants in the air.

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