Search Results
Showing results 581 to 600 of 1554
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-884.gif?itok=gf4aJ6Gl)
Test Density with a Supersaturated Solution
Source Institutions
Learners create three solutions with different levels of salinity. They compare the density of these solutions by coloring them and layering them in a clear plastic cup and in a soda bottle.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-648.gif?itok=kReBe4Yg)
Macro-Microarray
Source Institutions
In this activity, learners explore the "nuts and bolts" of gene chips.
Dive into Design
Source Institutions
Based of the The Tech Challenge 2015, learners will engage in two mini-design challenges related to seismic engineering.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-085.jpg?itok=TzYbMFug)
Maillard Reaction
Source Institutions
In this activity, learners will explore the chemistry of cooking. They will learn about--and observe--the Maillard Reaction as they make their own browned butter.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-576.png?itok=qSt7v9IG)
Equatorial Sundial
Source Institutions
In this activity, learners make an equatorial sundial, which is simple to construct and teaches fundamental astronomical concepts. Learners use the provided template and a straw to build the sundial.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-759.jpg?itok=6Nbm7sc8)
Plankton Feeding
Source Institutions
This activity provides a hands-on experience with a scale model, a relatively high viscosity fluid, and feeding behaviors.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-671.jpg?itok=Nm6CnC9m)
Hanford at the Half-Life Radiation Calculator
Source Institutions
This quiz lets you estimate your annual radiation exposure.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-255.jpg?itok=95bH1-76)
Handheld Water Bottle Rocket & Launcher
Source Institutions
In this activity, learners build handheld rockets and launchers out of PVC pipes and plastic bottles. Use this activity to demonstrate acceleration, air pressure, and Newton's Laws of Motion.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-046.jpg?itok=Onsy-Y2R)
Lego Man Jump
Source Institutions
In this activity, learners are challenged to create a parachute using easily sourced materials in order to transport a LEGO figure safely to the ground.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-304.gif?itok=h9Pu587B)
To Dye For
Source Institutions
Learners add two dyes to mineral oil and water, and then compare their miscibility (how well they mix) in each.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-044.jpg?itok=aqEnjdsN)
Measuring the Wind
Source Institutions
In this activity, learners explore how anemometers work to record wind speeds and how the equipment has undergone engineering adaptations over time.
Stranded
Source Institutions
What's a more compelling problem to solve than being stranded on a deserted island?
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-798.png?itok=IKCcV01K)
Cook Up a Comet
Source Institutions
In this activity (on page 5 of PDF), learners use dry ice and household materials to make scientifically accurate models of comets.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-212.jpg?itok=TafDrn3f)
Moldy Jell-O
Source Institutions
In this laboratory activity, learners design an experiment to evaluate how environmental factors influence the growth of molds.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-407.jpg?itok=tAFyBfkU)
Burning Questions About a Candle
Source Institutions
In this activity, learners will observe a deceptively simple process: a burning candle.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-087.jpg?itok=bcMDwbdC)
Aviary Architect
Source Institutions
In this activity, learners are challenged to design, build and test a birdhouse that will stay cool in the sun.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-206.jpg?itok=etnn905j)
Styrofoam Traps
Source Institutions
In this activity, learners use Styrofoam to collect organisms from a pond, estuary or marine environment and then examine what they have caught with a microscope.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-911.jpg?itok=vUchuQfw)
Acids & Bases
Source Institutions
In this activity, learners test the pH of safe liquids available at home by creating a pH indicator from mashed blueberries.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-698.gif?itok=aZE1LnL3)
Inverted Foucault Pendulum
Source Institutions
In this demonstration, learners explore a variation of a Foucault pendulum, but upside down.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-905.jpg?itok=03BMO_Ud)
Anti-Gravity Chamber
Source Institutions
In this activity, learners will use magnets and household items to create a structure that allows paperclips to appear like they are floating.