filters
![A family looks at an image through a blue filter](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2022-02/ExSci_Space_20180929_1190_edit.jpg?h=3d346970&itok=-dNccHVd)
Exploring the Universe: Filtered Light
In this activity, learners discover how colored filters can help reveal more about an image and we can use light and filters to learn more about an object.
Product
![Hands holding square of polarizers and transparent tape](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/20140907GH1_149-1.jpg?h=6e097db3&itok=nGRgb_cw)
Exploring Materials - Polarizers
In this activity, learners experiment how polarizers affect light by using two polarizing sheets and overlapping layers of transparent tape.
Product
![Learners pour beads into a sieve filter to sort by size](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/8883/20110918gh192.jpg?h=4de69ae3&itok=Bn5ClXkh)
Exploring Size - Ball Sorter
In this activity, learners use sieves with different-sized holes, to sort balls by size and investigate filtering.
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