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In this two-part activity, learners explore the properties of liquid crystals, which are responsible for why mood rings change color.

In this activity on page 14 of the PDF (Rethinking the 3 R’s: It’s Easy to be Green), learners turn plain pieces of recycled plastic into shrunken works of art.

In this technology activity, learners build simple circuits, design soft circuits using conductive thread, and then sew switch-activated circuits.