Search Results
Showing results 241 to 260 of 277
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-273.jpg?itok=ATQYHqLY)
Dissolving Different Liquids in Water
Source Institutions
In this activity, learners add different liquids to water and apply their working definition of “dissolving” to their observations.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-995.jpg?itok=5WDwc-an)
Recycling Paper
Source Institutions
In this crafty chemistry activity (on page 2 of the PDF), learners make their own paper from used paper they may have otherwise thrown away.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-106.gif?itok=1-G2XemB)
Show Your Colors!
Source Institutions
In this family or group activity, learners conduct a chromatography experiment to reveal the colors that leaves "hide" under their green pigments.
Water Motor
Source Institutions
In this physics activity (page 10 of the PDF), learners will explore how energy from moving water can be used.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-012.gif?itok=UdFRSD_c)
Flubber
Source Institutions
Learners experiment with a piece of Silly Putty® by stretching, bouncing, and snapping it. They then create flubber, a similar substance, by mixing diluted glue and a solution of sodium borate.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-201.gif?itok=X47mf9rE)
Bubble Bomb
Source Institutions
Learn about chemical reactions by making a Bubble Bomb, a plastic bag you can pop with the power of fizz.
Globby Gooey Gak
Source Institutions
In this activity, learners concoct some stretchy green goo called Gak. This activity will introduce learners to polymers, chemical reactions, and how scientists invent new materials.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-248.jpg?itok=smNAs51a)
Comparing the Amount of Acid in Different Solutions
Source Institutions
In this activity, learners use detergent solution to compare two solutions containing vinegar and cream of tartar.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-274.jpg?itok=yq64tBWb)
Temperature Affects Dissolving
Source Institutions
Learners design their own experiment to compare how well cocoa mix dissolves in cold and hot water. They will see that cocoa mix dissolves much better in hot water. Adult supervision recommended.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-506.jpg?itok=lvcx8lKV)
Exploring Structures: DNA
Source Institutions
In this activity, learners create a necklace of wheat germ DNA. Learners add alcohol to wheat germ so that the DNA clumps together.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-007.gif?itok=Z7nmV5zW)
Resistance is Useful
Source Institutions
Learners write or draw with white crayon on white paper. They look and feel to detect their marks on the paper. Then, learners paint over their paper with watercolor paint.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-630.png?itok=p-McJpvb)
Apples with Appeal
Source Institutions
In this activity, learners investigate why apples turn brown. Learners discover that lemon juice interferes with the reaction that causes the browning.
Butterflies in Space
Source Institutions
The Butterflies in Space Teacher's Guide uses "life in space" to encourage learners to conduct their own open-ended scientific investigations.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-994.jpg?itok=BeUeMURk)
Water Ways
Source Institutions
In this activity (on page 2 of the PDF), learners explore surface tension by adding pennies to cups which are "full" of plain water or soapy water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-205.png?itok=gSzMiZhd)
The Old White Sheet Trick: Light and Insect Behavior
Source Institutions
In this outdoor, nighttime activity, learners gather around a brightly lit, white surface and study the behavior of nocturnal animals attracted to the light, particularly night fliers.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-770.jpg?itok=ydVJqqpS)
Push Me a Grape
Source Institutions
In this physics activity, learners experiment with the attractive and repulsive power of magnets.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-671.gif?itok=C9PWgzD2)
Biomimicry: Synthetic Gecko Tape Through Nanomolding
Source Institutions
In this activity/demo, learners examine a synthetic gecko tape with micron sized hairs that mimics the behavior of the gecko foot.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-555.png?itok=xFDa0CuX)
Round, Light and Hollow
Source Institutions
In this activity about bones (page 12 of PDF), learners investigate and compare the weight-bearing capacity of solid and hollow cylinders.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-165.gif?itok=Hoy8wvgP)
Try Growing Your Own Mold
Source Institutions
This is a hands-on activity that uses bread and household materials to grow mold. Learners collect dust from a room, wipe it on food, and contain it. One to seven days later, mold has grown.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-834.jpg?itok=Rker1TXK)
All Mixed Up!
Source Institutions
In this activity, learners separate a mixture of pebbles, salt crystals, and wood pieces. They add water and pour the mixture through a strainer.