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Hold a Hill
Source Institutions
In this outdoor activity, learners investigate the relationship between the slope of a trail and soil erosion.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-861.gif?itok=umup6nux)
Modeling Limits to Cell Size
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This investigation provides learners with a hands-on activity that simulates the changing relationship of surface areas-to-volume for a growing cell.
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Now or Later: The "Recency/Primary" Effect
Source Institutions
In this activity (18th on the page), learners conduct an experiment to examine memory.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-696.png?itok=D1v45vq0)
Polynomial and Rational Functions: Building Boxes
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In this math lesson, learners explore polynomial and rational function patterns.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-697.gif?itok=QtI2tAjq)
A Cubic Foot Per Second
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In this activity, learners measure and calculate the amount of cubic feet various containers contain. Next, learners investigate cubic feet per second (cps), by carrying jugs in one second.
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Arctic Sea Ice
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In this activity, learners explore how the area of Arctic sea ice has changed over recent years. First, learners graph the area of Arctic sea ice over time from 1979 to 2007.
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How Big is Small
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In this classic hands-on activity, learners estimate the length of a molecule by floating a fatty acid (oleic acid) on water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-732.jpg?itok=8QJMTSy8)
Having a Gas with Cola
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In this activity, learners measure the amount of carbon dioxide in a carbonated drink.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-664.jpg?itok=hkJtcN4-)
Pico Cricket Compass
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Learners can program a compass to draw a circle by itself using a Pico Cricket, some Legos, and lots of tape! Pico Cricket is required.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-461.jpg?itok=eONBaDnz)
Transit Tracks
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In this space science activity, learners explore transits and the conditions when a transit may be seen.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-217.jpg?itok=v3XGqZky)
Newton Car
Source Institutions
In this activity, learners work in teams to investigate the relationship between mass, acceleration, and force as described in Newton's second law of motion.
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Evolution in Plane Sight
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In this activity, learners model directed evolution by making paper fly. Learners construct and fly paper airplanes.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-707.jpg?itok=KE2PHeFp)
Earth Walk
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In this hands-on and feet-on excursion, learners take a science walk to visualize the planet's immense size and numerous structures, without the usual scale and ratio dimensions found in most textbook
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Getting There!: Navigation and Trajectory
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In this two-part activity, learners map a navigation plan to get from Earth to Mars and back. In activity one, learners represent the orbital paths of Earth through dance and dramatic movement.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-473.gif?itok=bYYEQc6Z)
Vestibular-Ocular Reflex
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In this activity, learners will perform various investigations to understand the vestibular-ocular reflex and learn about the importance of visual cues in maintaining balance.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-463.gif?itok=yStFcDbB)
The Parachuting Egg
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In this activity, learners work in groups to design a parachute out of household items that keeps an egg secure when dropped from a certain height.
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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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Rocket Wind Tunnel
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In this activity, learners evaluate the potential performance of air rockets placed inside a wind tunnel.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-736.gif?itok=C5u6moz6)
Atmosphere Composition Model
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In this activity, learners create a model using metric measuring tapes and atmosphere composition data.