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Showing results 61 to 80 of 451
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Does Sunscreen Protect My DNA?
Source Institutions
In this laboratory experiment, learners explore how effectively different sunscreens protect yeast cells from damage caused by ultraviolet (UV) radiation.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-008.jpg?itok=GOjTDeT_)
The Scoop on Scallops
Source Institutions
In this data analysis activity, learners quantify the abundance and distribution of sea scallops in and adjacent to the Mid-Atlantic closed areas.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-328.png?itok=i5EL-KMj)
Water Filter
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In this engineering activity, challenge learners to invent a water filter that cleans dirty water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-912.gif?itok=3vWTsPFA)
Four Corners
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In this design challenge activity, learners build a machine out of cardboard that runs smoothly and dependably. Learners must be precise to make sure their component works properly.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-906.jpg?itok=TRSQQean)
Electric Highway
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In this design challenge activity, learners design and build a circuit: an "electric highway" that connects a battery and buzzer at least three feet apart using four types of materials.
Sea State: Forecast Conditions at Sea
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In this oceanography and data collection activity, learners cast real time sea state conditions using buoys from NOAA's National Data Buoy Center.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-103.png?itok=Gl0jYJuC)
Deep Sea Diver
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In this ocean engineering activity, learners explore buoyancy and water displacement. Then, learners design models of deep sea divers that are neutrally buoyant.
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Get-Moving Game
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In this invention challenge activity, learners create an indoor game for one or two people that gets you moving.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-489.jpg?itok=YZSX8DJ-)
Seed Orbs
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In this activity, learners will make seed orbs to grow new trees and plants. Learners will explore ecology and life cycles as well as stewardship through this activity.
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Helping Hand
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In this invention challenge activity, learners see how many objects they can grab with a homemade "bionic" arm.
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Exploring Structures
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This event guide features three related explorations in which learners investigate the following science concepts: how you design and build a structure helps determine how strong it will be; different
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Measure the Pressure: The "Wet" Barometer
Source Institutions
In this activity, learners use simple items to construct a device for indicating air pressure changes.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-085.jpg?itok=LMGPbnA8)
Measuring Wind Speed
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In this indoor and/or outdoor activity, learners make an anemometer (an instrument to measure wind speed) out of a protractor, a ping pong ball and a length of thread or fishing line.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-329.jpg?itok=NfTp5VYH)
Hoop Glider
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In this activity, learners engineer a flying glider using paper hoops and a drinking straw.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-315.png?itok=VfNHjyRw)
Balloon Car
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In this physics activity, challenge learners to make and race a balloon-powered car. Learners construct the body out of a paper cup, wheels out of wooden spools. and fuel tank out of a balloon.
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Geometry and Algebra: The Future Flight Equation
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In this activity, learners discover how NASA engineers develop experimental aircraft.
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Shake it up with Seismographs!
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In this activity, learners explore the engineering behind seismographs and how technology has improved accurate recording of earthquakes.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-976.jpg?itok=CVZP7Bxi)
Electric Switches
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In this activity, learners incorporate a simple switch into a battery/bulb circuit. Learners will use their knowledge of circuits to design and make their own switches using common materials.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-961.jpg?itok=Dr8c1LDR)
What Trickles Down?
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Learners design their own experiment to explore the permeability of different materials such as soil, sand, gravel, and marbles.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-456.gif?itok=8DXjbfi8)
Design a Lunar Rover!
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In this team design challenge (page 2-10 of PDF), learners design and build a model of a Lunar Transport Rover that will carry equipment and people on the surface of the Moon.