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Sodium Acetate Hand Warmers
Source Institutions
In this activity, sodium acetate hand warmers are used to introduce learners to supersaturated solutions, crystallization, and exothermic reactions.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-698.jpg?itok=JMZVHQjJ)
Repulsive Grape: Diamagnetism
Source Institutions
Do grapes, yes the grapes from the grocery store, move in the presence of a very strong magnet?
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-736.gif?itok=C5u6moz6)
Atmosphere Composition Model
Source Institutions
In this activity, learners create a model using metric measuring tapes and atmosphere composition data.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-797.gif?itok=9uSd_B4Q)
Paper Tape Motion Timer
Source Institutions
In this activity, learners build a recording timer made from simple materials (e.g., small dc motor, sharpie pen, craft sticks, adding machine paper tape, etc.).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-783.gif?itok=5RthtE_j)
Toilet Model
Source Institutions
In this activity, PVC pipe, plastic water bottles and vinyl tubing are used to make a simple working toilet model. The model shows the role of a siphon in the flushing of a toilet.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-795.gif?itok=8w4NjH15)
Cylindrical Wing
Source Institutions
In this design and physics challenge, learners construct a cylindrical wing, fly it, make modifications, and determine how the changes affect flight patterns.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-781.gif?itok=00bPZO0_)
Marshmallow Puff Tube
Source Institutions
In this demonstration/activity, learners observe as a regular size marshmallow is blown through a tube made from a manila file folder.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-782.jpg?itok=fN3cMS8B)
Sweetly Balanced Equations
Source Institutions
In this (edible) activity, learners balance chemical equations using different kinds and colors of candy that represent different atoms. Learners will work in pairs and explore conservation of atoms.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-796.gif?itok=DlG_NXpo)
Springs and Stomachs
Source Institutions
In this demonstration, learners investigate mass, gravity, and acceleration by dropping a wooden bar with a balloon attached to its underside, a mass suspended from it by rubber bands, and a sharp-poi
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-669.jpg?itok=3PAuiOaN)
Your Father's Nose
Source Institutions
In this fun optics activity, learners explore principles of light, reflection (mirrors), and perception. Learners work in pairs and sit on opposite sides of a "two-way" mirror.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-532.png?itok=LtNA0zyD)
Tiny Pants Photo Challenge
Source Institutions
In this activity, learners use a simple trick of perspective to dress friends in tiny cutout clothing. Learners make tiny pants out of card stock and tape them to the end of a stick.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-806.jpg?itok=jjyIFV4A)
Tape Electroscope
Source Institutions
In this simple activity, learners create an electroscope by sticking two short pieces of magic tape together and then pulling them apart to find the sign of the charge on an unknown charged object.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-635.gif?itok=uOFfS4tM)
Dye Like A Natural
Source Institutions
In this activity, learners stain fabrics--on purpose!
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-368.png?itok=ktA2jUA9)
Finding the Sweet Spot
Source Institutions
In this activity, learners will discover how to find the "sweet spots" on a baseball bat. Whenever an object is struck, it vibrates in response.
Floating Paperclip and Other Surface Tension Experiments
Source Institutions
In this activity, learners experiment with surface tension using everyday household items such as strawberry baskets, paperclips, liquid dish soap, and pepper.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-743.gif?itok=jJwm7nYu)
Inverse Square Law
Source Institutions
In this math activity related to light, learners explore why a light, such as a candle or a streetlight, looks dimmer the farther away from it we get.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-680.gif?itok=56D3uYCR)
Magnetic Free Fall
Source Institutions
In this activity, learners use a pencil, magnets, and mat board to illustrate Newton's Second Law.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-694.gif?itok=1OjDQoeB)
M&M® Model of the Atom: Edible Subatomic Particles
Source Institutions
In this activity, learners use colored candy to represent subatomic particles and make a model of an atom (Bohr model).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-737.jpg?itok=czY40A5i)
Paper making: a craft and a chemical engineering major
Source Institutions
In this activity, learners explore the question "What is paper?" Learners discover the processes and materials required to make paper while experimenting with different recycled fibers and tools.