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Leaves: Designing Leaf Arrangements on a Branch
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In this hands-on activity, learners investigate the functional design of leaves on a tree.
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The Carbon Cycle and its Role in Climate Change: Activity 2
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In this activity (on page 7), learners explore the meaning of a "carbon sink." Using simple props, learners and/or an educator demonstrate how plants act as carbon sinks and how greenhouse gases cause
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Disease Detectives
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In this activity, learners examine antibodies and antibody recognition using a model.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-878.jpg?itok=kh4wJULB)
The Best Dam Simulation Ever
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This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-763.jpg?itok=2RMB7x0x)
Introduction to Ocean Zones
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In this activity, learners will create a diagram of the ocean zones and determine what organisms live in each zone.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-509.png?itok=B-jqFCWJ)
Globe at Night
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In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-677.jpg?itok=-ycXGc7o)
Designing Bandages
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Learners design different shaped bandages for different purposes. First, they draw their designs on paper.
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Find Your Way Around Without Visual or Sound Cues
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In this activity, learners play a series of simple games to investigate navigation without visual and sound cues.
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Foam Peanuts
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Learners compare the properties and solubilities of Styrofoam (TM), ecofoam packing peanuts, and popcorn. First, the solubility of each substance is tested in water.
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Adaptive Device Design
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In this activity, learners explore the concept of how engineering has made possible the development of--and ongoing improvements to--adaptive devices that serve to help individuals with a wide range o
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Slimy Cells
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In this activity, learners solidify their conceptualization of cells by building a model of a cell in a ziplock bag.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-856.jpg?itok=aJwzwPXs)
Music and Sound
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This activity (on page 2 of the PDF under SciGirls Activity: Music and Sound) is a full inquiry investigation into sound frequency.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-282.jpg?itok=Re_XvRr6)
Sustainable Fishing
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In this activity, learners use a model for how fishing affects marine life populations, and will construct explanations for one of the reasons why fish populations are declining.
Build a Borneo Glider
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In this inquiry-based activity, learners investigate the basic forces of flight as they construct their own paper glider that represents a rainforest creature from Borneo (large, tropical island in So
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Nano Latch-n-Catch
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In this activity, learners design a therapeutic agent to image and/or cure various diseases in the respiratory system.
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Build a Band
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In this design challenge activity, learners build a four-stringed instrument that can play a tune.
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Differing Densities: Fresh and Salt Water
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In this activity, learners visualize the differences in water density and relate this to the potential consequences of increased glacial melting.
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Make Your Own Perfume
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In this activity about olfaction (7th activity on the page), learners use natural ingredients to concoct their own perfume.
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Going Green
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In this activity, learners conduct a waste audit and use their findings to implement a plan for reducing trash.
Many Seeds: Estimating Hidden Seeds
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In this activity, learners will estimate how many seeds are in a fruit or vegetable, then count to find out. The result: mix estimation with healthy eating.