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The Unpoppable Balloon
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In this activity, learners explore polymer structure and their ability to reform around objects by attempting to stab a wooden skewer through a balloon without popping it.
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Bone Stress
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In this optics activity, learners examine how polarized light can reveal stress patterns in clear plastic.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-310.png?itok=m7AQM3OC)
Fun With Stress
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In this activity, learners complete simple exercises to investigate the relationship between force, area and pressure and their effects on materials.
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Breaking Beams
Learners investigate stress and strain by designing, building, and testing beams made from polymer clay.
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Playground Patterns of Cracks
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In this math activity, learners observe and sketch cracking patterns in pavement.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-544.png?itok=8YsqRB0G)
Good Stress
Source Institutions
In this activity about physical stress (page 28 of PDF), learners discover that muscles and bones need to work to stay strong.