Search Results
Showing results 81 to 100 of 1016
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-326.png?itok=18du2XIX)
Gas Production: Blow up a balloon!
Source Institutions
In this classic reaction, learners baking soda and vinegar in a soda bottle to produce carbon dioxide (CO2) gas. This gas inflates a balloon.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-277.jpg?itok=X_8_m8P1)
Electric Paddle Boat
Source Institutions
In this activity, learners build an electric two-paddle boat using paint paddles, plastic knives, and empty water bottles.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-723.jpg?itok=Y7vrDaiu)
Twisted Tesselations
Source Institutions
In this activity (on pages 41-47 of PDF), learners explore tesselating geometric patterns (repeated shapes, similar to the art of M.C. Escher).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-003.jpg?itok=R3f1qnuZ)
Subtractive Paint Prints
Source Institutions
In this activity, learners of all ages will experiment with paint and printmaking.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-634.jpg?itok=N4EgKWGx)
Sandy Samples
Source Institutions
In this collecting/comparing activity, learners work with samples of sand from different places like a lakefront, river, or ocean beach.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-017.jpg?itok=L0NbwA4R)
Make Your Own Slushies
Source Institutions
In this activity, learners will make their own slushies and learn some of the science behind how the process works.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-620.png?itok=XhVJWzm4)
Make Maracas
Source Institutions
Make a rattle-like musical instrument! Shake it, hit it, spin it any way you want to!
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-433.jpg?itok=D9CeoWvL)
Reflecting Rainbows: Decorate Your White Walls With Rainbow Colors!
Source Institutions
Like water drops in falling rain, a CD separates white light into all the colors that make it up.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-238.jpg?itok=N6N0hTDh)
Creepy Crawlers
Source Institutions
Trick your family and friends with this creepy crawler that moves up and down. In this activity, learners construct a circuit and motor device that will move a homemade spider in a spooky way.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-450.jpg?itok=V5Kc_BeL)
Bubble Tray
Source Institutions
In this activity, learners use simple materials to create giant bubbles.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-970.png?itok=ixSt4N9L)
Which Powder is It?
Source Institutions
In this chemistry challenge, learners identify an unknown white powder by comparing it with common household powders.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-478.png?itok=4BAU6J18)
Cartesian Diver
Source Institutions
In this demonstration, learners observe the effects of density and pressure. A "diver" constructed out of a piece of straw and Blu-Tack will bob inside a bottle filled with water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-479.png?itok=OsNzMBdR)
Amazing Marshmallows
Source Institutions
In this demonstration, learners observe the effects of air pressure. They will watch as marshmallows inside a bottle expand as a vacuum pump removes air from the bottle.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-971.png?itok=UoR7n000)
Plant Power
Source Institutions
In this chemistry challenge, learners identify which plants have the enzyme "catalase" that breaks hydrogen peroxide into water and oxygen.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-656.jpg?itok=YmnK7-EG)
Morphing Butterfly
Source Institutions
In this activity, learners explore how nanosized structures can create brilliant color.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-742.jpg?itok=lEq2rVG4)
Robot Hands
Source Institutions
This activity (on page 2) explores how sensing is part of robotics. Learners try tying their shoes with different constraints.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-223.png?itok=trj1GMsC)
Who Goes There?
Source Institutions
In this outdoor, night activity, learners track nocturnal animals' footprints, droppings and other signs of their presence.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-974.gif?itok=nnPJjI3C)
Views From Windows
Source Institutions
In this activity, learners use their imaginations and picture a scene in their heads.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-736.jpg?itok=BWWpSKeL)
Odors Aloft
Source Institutions
Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-654.jpg?itok=2asbLN2W)
Gravity Fail
Source Institutions
In this activity, learners try pouring water out of a regular cup and a miniature cup. It’s harder than it sounds! Learners discover that different forces dominate at different size scales.