![Group of children and adults using dry ice to make bubbles in Explore Science Let's Do Chemistry Sublimation Bubbles activity](https://nisenet.org/sites/default/files/styles/splashy_hero_large/public/2020-12/hero%20short%20activities%20ExSci_Chem_20180219_1509.jpg?h=42c56089&itok=HWOdWDCH)
Short Activities
Short activities are brief hands-on experiences lasting less than 15 minutes for small groups of people.
They are often presented at a table, cart, or demonstration space in a variety of settings such as a museum exhibit gallery, classroom, or other public or group setting. Multiple short activities can be combined to form a longer activity.
![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.
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![Learners pull on elastic bands to simulate the stretching of the universe](https://nisenet.org/sites/default/files/styles/curated_list_large/public/expanding_activity.jpg?itok=hhho-4X-)
Exploring the Universe: Expanding Universe
In this activity, learners pull at the edges of a stretchy model universe and see that the space between objects in the universe is expanding.
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![Facilitator and Learner use a block with a rover image to transport astronauts](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2020-10/ExSci_Space_20200908_0143%20Story%20Blocks.jpg?h=4c7240b8&itok=AOU7zznV)
Exploring the Solar System: Story Blocks
Every space mission has a story. In this activity, learners use blocks to tell a creative story about planning a space mission to explore the Moon together.
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![Children exploring Building with Biology DNA activity using pipette](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2021-12/category_life_sciences.png?h=0c86fa9d&itok=aHAAkpGg)
Exploring Structures - DNA
In this activity, learners create a necklace of wheat germ DNA to explore self-assembly
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Tiny Particles, Big Trouble!
In this activity, learners investigate clean rooms by sniffing scents that are too small to see, trying on the head-to-toe suits that scientists wear in clean rooms, and manipulating pretend silicon wafers with tweezers.
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![Two learners and one facilitator look and discuss a space elevator concept that one of the learners drew on paper](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2022-02/20120722GH2_195.jpg?h=6f8e8448&itok=WrWmlK3b)
Exploring Nano & Society - Space Elevator
In this activity, learners imagine and draw what a space elevator might look like, what support systems would surround it, and what other technologies it might enable.
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![Boy holding a plastic bag of green oobleck with a plastic Easter egg](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/12192/oobleck.jpg?h=f52b39c0&itok=ZAxEJ2LY)
Exploring Materials - Oobleck
In this activity, learners investigate the properties of a cornstarch and water mixture, called Oobleck, and test its ability to protect from impacts.
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![A learner blows air on a pinwheel](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/images/catalog/11085/moving_molecules.jpg?h=8771458a&itok=z6po-Y8H)
Exploring Size - Moving Molecules
In this activity, learners use an air cannon toy to spin pinwheels to explore what makes up air.
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![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.
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![Building with Biology event passport sheet](https://nisenet.org/sites/default/files/styles/curated_list_large/public/images/catalog/BwB_EventPassport_Page_2.jpg?itok=705vU41k)
Event Passports for Building with Biology events
Visitor "passports" can be used at your Building with Biology event to collect stamps at hands-on activity stations and scientists they've talked to.
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