vacuum
![Image showing an illustration of a Mars rover](https://nisenet.org/sites/default/files/styles/curated_list_large/public/images/catalog/about/Rover.png?itok=CqQxsPg9)
Is That Robot Real? children's book and poster
Book, graphics panels, and evaluation report on fact and fiction around robots.
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![While sitting at a table, one child points a small transmitter at a vacuum-seal container that has a key finder inside, and another child holds a smartphone up to the other side of the container.](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2023-03/ms2.jpg?h=d5227d54&itok=wYaMS_10)
Radio Explorers: Messages from Space
Learners investigate the differences between sound and radio waves in a partial vacuum.
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![Two learners and a caregiver smile as they observe a small toy in a vacuum chamber](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/exsci_chem_20180530_1814.jpg?h=265e640d&itok=6jywKw4N)
Molecules in Motion
In this activity, learners experiment with putting various objects in a small vacuum chamber and explore how the materials behave and change when the air in the chamber is removed.
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