Search Results
Showing results 101 to 120 of 199
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-126.png?itok=Lz5pzN6u)
Paper Proteins
Source Institutions
In this activity, learners use an origami template to design eight amino acids. Learners configure the amino acids to form a protein. Use this activity to introduce proteins and amino acids.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-272.jpg?itok=ucHqQWMt)
Sound Automata
Source Institutions
In this activity, learners build their own sound machines and explore the interplay of motion and sound.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-264.jpg?itok=azjudSTv)
Floating Head Cup
Source Institutions
In this activity, learners watch a figure "magically" float up through the air.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-640.png?itok=hbm17YU9)
Sticky Structures
Source Institutions
In this engineering/design/arts and crafts activity, learners design and build "platforms" or "bridges" that can hold weight, and test which glue makes the strongest structure.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-270.jpg?itok=AvWDgOMJ)
Tube Zither
Source Institutions
In this activity, learners explore sound by constructing tube zithers, stringed instruments from Southeast Asia and the South Pacific.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-998.png?itok=PuyXyPrp)
Paper Chromatography with Leaves
Source Institutions
In this activity on page 5 of the PDF (Plants—The Green Machines), learners use chromatography to separate and identify pigments within various leaves.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-088.jpg?itok=XosCLObZ)
Watercolor
Source Institutions
In this activity, learners will use chemistry to create a night sky watercolor painting. They will experiment to learn the effects of mixing crayon, salt, and lemon juice with water color paints.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-066.jpg?itok=ehGmu8BU)
Trophy Triathlon
Source Institutions
In this activity, learners are challenged to design and construct a trophy for prize-winning sports equipment.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-365.png?itok=QeRSdqbT)
Wind Works!
Source Institutions
Learners will build and experiment with their own windmills made from simple household materials.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-687.jpg?itok=kWflrAgh)
Spinning Illusions
Source Institutions
In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-693.jpg?itok=bg_DzERZ)
Gymnast
Source Institutions
In this physics activity, learners build a toy with a figure that spins around like a gymnast on the high bar.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-543.jpg?itok=OJaWZAMX)
Moo Glue
Source Institutions
Using a milk-based recipe, learners create "moo glue" which is basically white school-type glue. The "secret ingredient" in milk that helps make glue is a chemical called casein.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-534.jpg?itok=Z93vKy8i)
Wind Tunnel
Source Institutions
Scientists use enormous wind tunnels to test the design of planes, helicopters, even the Space Shuttle.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-385.jpg?itok=zrcFkcsc)
Fly a Hot-Air Balloon
Source Institutions
Learners assemble a hot-air balloon from tissue paper. The heated air (from a heat gun) inside the balloon is less dense than the surrounding air and causes the balloon to float.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-529.gif?itok=n1Zt3RLL)
Rainbow in the Room
Source Institutions
This activity generates learner excitement about light through the creation of a room-sized rainbow.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-757.jpg?itok=wAuEtaw2)
Origami Flying Disk
Source Institutions
In this three-part activity, learners use paper to explore Bernoulli's Principle — fast-moving air has lower pressure than non-moving air.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-222.png?itok=4GU3CM0O)
Scribbling Machines
Source Institutions
In this activity, learners explore electronics and motion by making a Scribbling Machine, a motorized contraption that moves in unusual ways and leaves a mark to trace its path.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-119.jpg?itok=85Dtq5r3)
Bike Wheel Zoetrope
Source Institutions
In this activity (posted on April 18, 2011), learners follow the steps to construct a zoetrope, a device that produces an illusion of action from a rapid succession of static pictures, using a 16" bik
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-144.png?itok=1PSLobpQ)
Kool Colors
Source Institutions
Learn about dyes and mordants (fixatives) when you tie-dye fabric with Kool-Aid™ and vinegar. The colored molecules in Kool-Aid™ form a chemical bond between the fiber and dye molecules.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-015.jpg?itok=nlw8Ph9g)
Balancing Sculptures
Source Institutions
In this activity, learners will use a variety of household and/or natural objects to design a sculpture that balances from a single point.