Search Results
Showing results 1 to 20 of 377
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-383.jpg?itok=PVsEW8VY)
Cleaning with Dirt
Source Institutions
Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-912.jpg?itok=h-u2R7Pa)
Fizzy Nano Challenge
Source Institutions
This lesson focuses on how materials behave differently as their surface area increases.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-086.jpg?itok=cwXOZ2Ci)
Acid (and Base) Rainbows
Learners use red cabbage juice and pH indicator paper to test the acidity and basicity of household materials. The activity links this concept of acids and bases to acid rain and other pollutants.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-561.jpg?itok=yXud7-0Q)
Digestion
Source Institutions
In this food science activity, learners explore digestion and proteins by observing the action of meat tenderizer on luncheon meat.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-575.jpg?itok=pwL6lSDc)
Crossing the Synaptic Gap
Source Institutions
In this neuroscience activity, learners conduct a simulation to demonstrate how multiple incoming signals influence the action of neurons.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-632.gif?itok=iynjqdcH)
Tiny Tubes
Source Institutions
In this activity, learners make "totally tubular" forms of carbon. Learners use chicken wire to build macro models of carbon nanotubes.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-279.jpg?itok=B8nRCnK5)
Recrystallization Test
Source Institutions
In this activity, learners recrystallize substances from solutions and make observations about the resulting crystals. This test can help further identify the unknown.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-724.gif?itok=Bo7ocvdx)
DNA Extraction
Source Institutions
In this activity related to plant biotechnology, learners extract DNA from fruit to investigate how it looks and feels.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-254.png?itok=NQ2mVS_G)
Measuring Your Breathing Frequency at Rest
Source Institutions
In this activity about the brain and sleep (on page 138 of the PDF), learners measure their resting breathing rates. Learners will discover that breathing frequencies vary amongst individuals.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-047.png?itok=p-7widZN)
Is That DNA in My Food?
Source Institutions
In this activity, learners extract DNA from wheat germ. Use this activity to introduce learners to DNA, biotechnology and genetic engineering.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-278.jpg?itok=i1jCZn4h)
Look-alike Liquids
Source Institutions
Learners add drops of four liquids (water, alcohol, salt water, and detergent solution) to different surfaces and observe the liquids' behavior.
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-000-000-002-137.jpg?itok=kAzsrMcX)
A Funny Taste
Source Institutions
In this activity, learners explore the different salinities of various sources of water by taste-testing.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-330.jpg?itok=ItPXDz8V)
Changing the Density of a Liquid: Adding Salt
Source Institutions
Learners see that a carrot slice sinks in fresh water and floats in saltwater.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-645.png?itok=0WSZaTcP)
Chromatography Can Separate!
Source Institutions
In this chemistry activity, learners use thin layer chromatography to determine the molecular composition of different markers.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-402.png?itok=v2ac4sWe)
Best Bubbles
Source Institutions
In this activity, learners experiment with creating various types of bubble solutions and testing which ingredients form longer-lasting bubbles.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-490.jpg?itok=c9Em4Unp)
Invisible Ink Demonstration
Source Institutions
In this chemistry demonstration, learners will discover that phenolphthalein is a chemical that displays different colors depending on the acidity or basicity of the environment.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-005.png?itok=zD7rW-s8)
Find the Fizz: Discover the Secret of Baking Powder
Source Institutions
In this activity on page 4 of the PDF (Get Cooking With Chemistry), learners investigate ingredients that combine to produce gas bubbles.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-626.jpg?itok=IbatR_md)
Separation Anxiety
Source Institutions
In this activity, learners discover the primary physical properties used to separate pure substances from mixtures.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-011.png?itok=dSdq5S8w)
Newspaper Collage
Source Institutions
In this activity on page 3 of the PDF, learners create a collage by using vinegar to transfer color pictures from a newspaper onto a piece of white paper.