Search Results
Showing results 1241 to 1260 of 2059
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-524.jpg?itok=alKZ1KEn)
Exploring Size: Measure Yourself
Source Institutions
In this activity, learners mark their height on a height chart and discover how tall they are in nanometers.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-838.png?itok=UjNkfOMo)
Light is Made of Colors
Source Institutions
Learners observe different light sources, outdoors and indoors, using prism glasses (diffraction glasses) and color filters.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-723.gif?itok=BBzANS17)
The Primary Colors of Light
Source Institutions
In this activity, learners work in groups of four to explore light. Learners create new colors from the primary colors of light from flashlights covered in theatrical gels or cellophane.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-186.jpg?itok=gAdeWxOT)
Pollution and Waste Audit: Making Responsible Decisions about Waste
Source Institutions
In this activity, learners discover the three R's of environmental protection: reduce, reuse, and recycle.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-969.jpg?itok=NjFz0vwB)
Cutting Pi
Source Institutions
In this activity, learners use a string and pair of scissors to find pi in the world all around them. Take the circumference of a round object with string and cut the string to that length.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-870.jpg?itok=3oGHfmU3)
Yogurt Cup Speakers
Source Institutions
Learners build a simple electromagnet, then use this electromagnet to transform a yogurt container into a working speaker. They can connect their speaker to a radio and listen as it transmits sound.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-141.jpg?itok=4vQT50OB)
Leaf it to Me
Source Institutions
In this activity, learners observe the effect of transpiration as water is moved from the ground to the atmosphere.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-135.jpg?itok=MDJymodq)
Close It Up
Source Institutions
As learners play this challenging strategy game, they build understanding of area and perimeter. On each turn, a player draws a line between two dots next to each other on the grid.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-680.png?itok=Nrdnv5Mq)
Color Vision
Source Institutions
In this online activity, learners make a whole rainbow by mixing red, green, and blue light. They can change the wavelength of a monochromatic beam or they can filter white light.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-160.jpg?itok=48z-YJHY)
A Simply Fruity DNA Extraction
Source Institutions
In this activity, learners extract DNA from a strawberry and discover that DNA is in the food they eat.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-828.gif?itok=WElXs4sV)
Paper Airplanes
Source Institutions
In this activity, learners explore the properties of paper by constructing and modifying paper airplanes.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-931.jpg?itok=96vIMcvR)
Egg Drop Trick
Source Institutions
In this activity, learners explore the real science behind an egg drop "magic trick." Learners will wow their families by harnessing gravity, friction and motion to make 3 eggs fall off of their pedes
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-753.jpg?itok=QKFPvVKk)
Free-living and Plant-Parasitic Nematodes (Roundworms)
Source Institutions
This lesson introduces learners to the world of nematodes (roundworms).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-690.gif?itok=zfwfHtMk)
Fast Rusting
Source Institutions
In this activity, learners conduct an experiment to find out if steel wool will weigh more or less when it is burned. Learners will explore the effects of oxidation and rusting on the steel wool.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-226.jpg?itok=CusIxsLS)
Go with the Flow
Source Institutions
In this activity, learners discover how hard their hearts work to pump blood.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-273.jpg?itok=_koxW9fc)
Motorized Balancing Toy
Source Institutions
In this activity, learners build a toy that flies in circles. This activity introduces learners to center of mass, torque, and rotational motion.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-497.jpg?itok=hLQ9-MS8)
Bottle "Tops"
Source Institutions
In this physics activity about rotational inertia, learners use a spinning top made out of a bottle cap and a nail to explore how changing the axis of rotation affects how the energy is used.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-747.gif?itok=V4erlJf9)
Give and Take
Source Institutions
In this activity, learners explore liquid crystals, light and temperature. Using a postcard made of temperature-sensitive liquid crystal material, learners monitor temperature changes.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-684.gif?itok=ZX8WNxTj)
Indicating Electrolysis
Source Institutions
In this activity, learners build a simple electrolysis device. Then learners use an indicating solution to visualize hydrogen and oxygen molecules in water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-554.png?itok=qEH3RJ4o)
Soda Can Mirrors
Source Institutions
In this activity, learners explore how pictures change in curved mirrors. Learners make cylindrical mirrors by wrapping Mylar around soda cans.