Search Results
Showing results 21 to 40 of 59
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-290.png?itok=lEfdiqMn)
Color Splash
Source Institutions
In this activity, learners mix water, cooking oil, and liquid food coloring to create beautiful colored designs in a cup. Use this activity to explore liquid density and solubility.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-328.png?itok=Sf9sOHcd)
Cloudy Globs: Can You Make a White Gel From Two Clear Liquids?
Source Institutions
Using household materials, learners can make white gooey globs from clear solutions. Alum, dissolved in water, reacts with the hydroxide in ammonia to create aluminum hydroxide.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-599.png?itok=aHowFXxi)
Does Air Weigh Anything?
Source Institutions
The demonstration/experiment provides quick proof that air has mass.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-286.png?itok=x1KarTu2)
Reaction Time
Source Institutions
In this activity, learners conduct an experiment to test how fast they can react. Learners try to catch a piece of paper with a ruler printed on it (or a ruler) as quickly as they can.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-842.png?itok=l1y3hNKb)
Pepper Scatter
Source Institutions
In this quick activity, learners break the tension that happens when water develops a "skin." Learners use water, pepper and some soap to discover the wonders of surface tension—the force that attract
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-918.jpg?itok=MOo35k2W)
Balloon in a Bottle
Source Institutions
In this physics activity (page 3 of the PDF), learners will see firsthand that air takes up space and has pressure by attempting to inflate a balloon inside of a bottle.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-376.jpg?itok=dYG7GyaH)
The Nose Knows
Source Institutions
In this activity (2nd activity on the page), learners explore how the nose is responsible for part of the flavor we taste in food.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-705.jpg?itok=S5gHqvcV)
Chocolate (Sea Floor) Lava
Source Institutions
In this edible experiment, learners pour "Magic Shell" chocolate into a glass of cold water. They'll observe as pillow shaped structures form, which resemble lavas on the sea floor.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-592.gif?itok=BSxF4lpY)
What is a “Convection Cell”?
Source Institutions
In this demonstration, learners can observe a number of small convection cells generated from a mixture of aluminum powder and silicon oil on a hot plate.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-234.jpg?itok=MRRGHaYP)
Meltdown
Source Institutions
In this activity, learners heat ice and water of the same temperature to get a hands-on look at phase changes. This is an easy and inexpensive way to introduce states of matter and thermodynamics.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-741.png?itok=P1_vNczp)
DNA Extraction: Look at your genes!
Source Institutions
Extract your DNA from your very own cells! First, learners swish salt water in their mouth to collect cheek cells and spit the water into a glass.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-232.jpg?itok=XFmttdNW)
Can Crushers
Source Institutions
In this activity, learners conduct an experiment by heating an aluminum can filled with water to investigate air pressure.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-496.gif?itok=SXhC4Vfj)
Daffy Density
Source Institutions
In this chemistry activity, learners explore density by using four solids and 6 liquids to create colorful, layered rows.
Why Are Two Eyes Better Than One?
Source Institutions
In this activity, learners explore how their depth perception would be affected if they only had one eye. Learners work in pairs and attempt to drop a penny in a cup with one eye covered.
When is a Glass of Water Really Full?
Source Institutions
In this activity, learners see how many coins they can add to a full glass of water before the water overflows.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-298.png?itok=3n7Jyc-D)
Cauldron Bubbles
Source Institutions
In this activity, learners mix up a bubbly brew and examine density. Learners explore how they can make different materials fall and rise in water using oil, water, and salt.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-382.jpg?itok=V2hkSpDn)
Auditory Acuity
Source Institutions
This activity (8th activity on the page) tests learners' ability to identify things using only the sense of hearing.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-296.jpg?itok=HJcZmvc9)
Iron in Cereal: Find iron in your food!
Source Institutions
Learners investigate an iron-fortified cereal by stirring it with a strong magnet. They discover that metallic iron is present in some cereals.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-093.gif?itok=M-8h0YN1)
Make Your Own Deep-Sea Vent
Source Institutions
In this activity, learners make a model of the hot water of a deep sea vent in the cold water of the ocean to learn about one of the ocean's most amazing and bizarre underwater habitats.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-143.jpg?itok=SnADsgX8)
Catch the (Sound) Wave!
Source Institutions
See and hear how sound waves travel through different types of materials. Extend the experiment online and learn how you can "see" with sound waves using ultrasound.