ball sorter
![Young girl stacks large blocks with images on them](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/8887/puzzleblocks.jpg?h=155e127a&itok=v3T6FRj-)
NanoDays 2012 Digital Kit
Digital download of all public engagement and professional development files in the NanoDays 2012 kit designed to engage the public in nanoscale science, engineering, and technology and their impact on society.impact on society.
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![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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