Search Results
Showing results 41 to 60 of 243
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-328.png?itok=i5EL-KMj)
Water Filter
Source Institutions
In this engineering activity, challenge learners to invent a water filter that cleans dirty water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-393.gif?itok=iUMatiEa)
Colors, Colors?
Source Institutions
In this activity related to the famous "Stroop Effect," learners explore how words influence what we see and how the brain handles "mixed messages." Learners read colored words and are asked to say th
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-249.jpg?itok=2w_oIEjx)
Oily Ice
Source Institutions
In this activity, learners experiment with the density of ice, water, and oil. Learners will discover that the density of a liquid determines whether it will float above or sink below another liquid.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-686.png?itok=leZY1XKB)
DNA Extraction
Source Institutions
Learners use a simple process to extract DNA from strawberries.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-693.jpg?itok=ZJuh05zD)
Light Combinations
Source Institutions
In this activity about magnetism (page 17 of the pdf), learners experiment with magnets, exploring the concept of diamagnetic materials by seeing how a grape reacts to a magnetic field.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-687.png?itok=O0IUam7r)
Bend a Carrot
Source Institutions
In this activity, learners investigate the process of osmosis by adding salt to a sealed bag of raw carrots and comparing it to a control.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-331.gif?itok=ZwCxnW71)
Yeast Balloons: Can biochemistry blow up a balloon?
Source Institutions
Using yeast, sugar, and water, learners create a chemical reaction which produces carbon dioxide (CO2) gas inside a 2-liter bottle. They use this gas to inflate a balloon.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-271.jpg?itok=3pzjQ8KT)
Mysterious M&M's
Source Institutions
Learners place an M&M candy in water and observe what happens. The sugar-and-color coating dissolves and spreads out in a circular pattern around the M&M.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-782.jpg?itok=xLGh1fUi)
What's In Your Breath?
Source Institutions
In this activity, learners test to see if carbon dioxide is present in the air we breathe in and out by using a detector made from red cabbage.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-259.jpg?itok=_k42hDjH)
Color Changes with Acids and Bases
Source Institutions
Learners mix a variety of substances with red cabbage juice. The juice changes color to indicate whether each substance is an acid or a base.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-770.jpg?itok=8wfmdE8q)
Strengthen a Paper Bridge
Source Institutions
In this quick activity (page 1 of the PDF under SciGirls Activity: Tug O' War), learners will test how many pennies a flat paper index card bridging the gap between two stacks of books is able to supp
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-621.png?itok=0PlSvWmV)
Pressing Pressure
Source Institutions
In this activity, learners compare water pressure at different depths. Learners discover that water pressure increases with depth.
Shocking Fruit
Source Institutions
In this activity, learners discover how a piece of fruit can act as an electrolyte, conducting electricity between two different metals.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-422.png?itok=2uuNxSps)
Weather Stations: Temperature and Pressure
Source Institutions
In this activity, learners discover the relationship between temperature and pressure in the lower atmospheres of Jupiter and Earth.
What's So Special about Water: Absorption
Source Institutions
In this activity about water's cohesive and adhesive properties and why water molecules are attracted to each other, learners test if objects repel or absorb water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-765.jpg?itok=42R414rE)
Testing Falling Peanut Butter Sandwich Myth
Source Institutions
In this activity related to rotational inertia (page 1 of the PDF under SciGirls Activity: Microgravity), learners will use a bit of scientific experimenting to test if open-faced peanut butter sandwi
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-658.gif?itok=XOO0P_jz)
Rubber Blubber Gloves
Source Institutions
In this experiment, learners work in pairs to create two gloves -- one that contains a layer of shortening (blubber) inside, and one that doesn't.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-775.jpg?itok=OSg_n1nL)
Make Your Own Compass
Source Institutions
In this physics activity (page 8 of the PDF), learners will make their very own working compass.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-228.gif?itok=P3pOZHU6)
3-2-1 POP!
Source Institutions
In this physics activity, learners build their own rockets out of film canisters and construction paper.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-661.jpg?itok=4bXcMGPE)
DNA Nanotechnology
Source Institutions
In this activity, learners explore deoxyribonucleic acid (DNA), a nanoscale structure that occurs in nature.