iridescence
![Closeup photo of Blue Morpho Butterfly](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/10473/screen_shot_2012-06-06_at_4.21.34_pm.png?h=9e7b4264&itok=Pu_kczbB)
Butterfly Blues video
In this O Wow Moments video, Mr. O talks about iridescence and Blue Morpho butterflies.
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![two children looking at Blue Morpho butterfly](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/8886/butterfly.jpg?h=aabaf923&itok=-SMZfUJN)
Exploring Structures - Butterfly
In this activity, learners investigate how butterfly wings get their color and that some wings get their color from the nanoscale structures on the wings instead of pigments.
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![Children looking at Gecko with magnifying glass](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/8438/nise_net_press_photo_0019.jpg?h=22b7f206&itok=-zEDpgtI)
Biomimicry: From Nature to Nanotech
In this long activity, learners will engage in activities showing various natural phenomena that scientists and engineers have emulated to address human problems.
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![Exploring Materials - Thin Films activity components including signs, activity materials and guides.](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/rainbow_film_kit_materials.jpg?h=7025d824&itok=xEHGGVVK)
Exploring Materials - Thin Films
In this activity, learners create a colorful bookmark using a super thin layer of nail polish on water.
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