Search Results
Showing results 21 to 40 of 729
Trading Places: Redox Reactions
Source Institutions
Visitors add drops of copper sulfate solution onto a steel nail. They observe the nail change color from silver to brown as the copper plates onto the nail.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-686.jpg?itok=DAiTGkRA)
Tops
Source Institutions
In this activity, learners discover that some things only stand up while they are spinning.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-364.png?itok=PPFCBxaV)
Draft Detectives
Source Institutions
In this two part activity, learners become draft detectives by constructing their own draft catchers to detect drafts around windows or doors.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-521.jpg?itok=KwO1BPD_)
Exploring Products: Nano Sand
Source Institutions
In this activity, learners explore how water behaves differently when it comes in contact with "nano sand" and regular sand.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-788.jpg?itok=MprpqcIv)
Egg Drop
Source Institutions
In this activity, kids make and play with Ooze before testing the material in an egg drop!
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-801.gif?itok=Nn1wbkVT)
Fan Cart
Source Institutions
If a sailboat is stranded because there is no wind, is it possible to set up a fan on deck and blow wind into the sail to make the boat move?
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-509.jpg?itok=T6Bq0Ggw)
Exploring Materials: Liquid Crystals
Source Institutions
In this activity, learners discover that the way a material behaves on the macroscale is affected by its structure on the nanoscale.
Currently Working: Testing Conductivity
Source Institutions
Visitors test solutions of water, sugar, salt, and hydrochloric acid and the solids salt and sugar. They clip leads from the hand generator to wires immersed in each substance.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-135.jpg?itok=Pi9Vlw1t)
Salt 'n Lighter
Source Institutions
In this activity, learners discover that as the salinity of water increases, the density increases as well. Learners prove this by attempting to float fresh eggs in saltwater and freshwater.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-306.png?itok=m8djA0pV)
Chromatography
Source Institutions
In this activity, explore chromatography and the various colors that make up the ink in markers. Use this activity to investigate cohesion and adhesion.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-226.jpg?itok=pBN8r0-c)
Take It From The Top: How Does This Stack Up?
Source Institutions
In this activity, learners explore center of gravity, or balance point, of stacked blocks.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-540.png?itok=bSAm2oU4)
Boomerang
Source Institutions
Learners trace, cut out and fly a boomerang, outdoors or in a large indoor space.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-690.jpg?itok=PzwPJpxp)
Matraca
Source Institutions
In this activity, learners create a traditional Mexican noisemaker (a matraca) using cardboard, craft sticks, and a wooden dowel.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-497.png?itok=2ooHCdQc)
Fragile Waters
Source Institutions
In this activity (on pages 18-29) learners explore the impact of the March 24, 1989 oil spill in Alaska caused by the Exxon Valdez tanker.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-684.jpg?itok=3WanoNLh)
Zig Zag Bopper
Source Institutions
In this activity, learners build a machine made of craft sticks to multiply the levering motion of their hands and create a device that bends and extends.
Forwards and Backwards: pH and Indicators
Source Institutions
Visitors prepare six solutions combining vinegar and ammonia that range incrementally from acid (all vinegar) to base (all ammonia).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-789.jpg?itok=mzz9lYaO)
Smelly Balloons
Source Institutions
In this activity, learners sniff out scents hidden in balloons! After investigating, learners discover we sometimes can use another sense (smell) to detect things too small to see.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-508.jpg?itok=q_90tPR_)
Liquid Body Armor
Source Institutions
In this activity, learners explore how nanotechnology is being used to create new types of protective fabrics.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-252.png?itok=eHHR4Mai)
Magnet Mania
Source Institutions
In this activity, learners explore the relationship between electric charges and magnetic fields.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-531.jpg?itok=uIjuRcRp)
Surface Tension Icebreaker
Source Institutions
This is a quick activity (located on page 2 of the PDF under Nasturtium Leaves Activity) about surface tension.