Search Results
Showing results 41 to 60 of 122
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-739.jpg?itok=IKKyRfeE)
Pot-in-Pot Refrigeration
Source Institutions
In this activity (on page 2 of PDF), learners create a low-tech refrigerator that requires no electricity to keep food from spoiling.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-072.png?itok=1oSWLNsl)
Diving Submarine
Source Institutions
Learners use a commercially available toy to experiment with density. They fill a chamber in the toy submarine with baking powder and release it into a tank of water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-066.jpg?itok=4LT7gTTb)
See the Light
Source Institutions
Learners mix a solution of luminol with hydrogen peroxide to produce a reaction that gives off blue light.
![](/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-000-000-001-304.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-000-000-000-890.png?itok=pncJRHgn)
Electrolysis
Source Institutions
Using electrolysis, learners produce hydrogen gas and oxygen gas from water molecules in a solution.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-329.gif?itok=ZP1YuTH4)
Cabbage Juice Indicator: Test the pH of household products
Source Institutions
Learners make their own acid-base indicator from red cabbage. They use this indicator to test substances around the house.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-301.jpg?itok=x9pi3r8R)
Shrinkers: Cook up some plastic!
Source Institutions
In this activity (on page 2 of the PDF), learners (with adult help and supervision) investigate how heat affects polystyrene plastic.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-674.png?itok=ipAX94mK)
Wingin' It
Source Institutions
Learners explore the Bernoulli effect by building an airfoil (airplane wing) and making it fly.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-315.png?itok=8cg6hFZy)
Choose Your Ooze
Source Institutions
During this activity, learners will make different versions of "ooze" using varied proportions of detergent and glue.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-311.gif?itok=2dgr4DK2)
Miscibility
Source Institutions
Learners observe a bottle containing water and oil. They are invited to pick up the bottle and mix the contents together.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-200.jpg?itok=8fxklY11)
Tricky Tangrams
Source Institutions
In this activity (on pages 49-54 of PDF), learners play with tangrams, a set of triangles, squares and a parallelogram that can combine into a larger square as well as all sorts of other shapes.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-073.jpg?itok=KfbyMQrt)
Take Out the Trash
Source Institutions
Learners explore how recyclers take advantage of the different properties of materials, such as magnetism and density, to separate them from a mixture.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-114.png?itok=QrozW1sb)
Lost Labels
Source Institutions
In this experiment, learners will conduct chemical and physical tests to identify mystery substances.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-688.jpg?itok=28Wj8pQS)
Inner Space
Source Institutions
In this activity, learners discover that there is space between molecules even in a cup "full" of water. They first fill a cup with marbles, and then add sand to fill the gaps between the marbles.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-878.jpg?itok=kh4wJULB)
The Best Dam Simulation Ever
Source Institutions
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-000-000-000-677.jpg?itok=-ycXGc7o)
Designing Bandages
Source Institutions
Learners design different shaped bandages for different purposes. First, they draw their designs on paper.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-302.jpg?itok=3TJrqRrp)
Plastic Milk: You can make plastic from milk
Source Institutions
In this activity (on page 2 of the PDF), learners make a plastic protein polymer from milk. Adding vinegar to milk causes the protein casein to solidify or curdle.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-300.jpg?itok=ilysqQmo)
Invisible Ink
Source Institutions
In this hands-on activity (on page 2 of the PDF), learners experiment with lemon juice and paper to create a message that can only be revealed using chemistry.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-675.jpg?itok=gt3CzHb-)
Draggin' Boats
Source Institutions
Learners design, build, and test models of "dragon boats" made from up to three milk cartons.