Search Results
Showing results 221 to 240 of 275
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-554.jpg?itok=jhkAeuiu)
Make a Green Gumball Black
Source Institutions
In this optics activity, learners use a shoebox, colored cellophane and sunlight to "change" the colors of gumballs. Learners will be surprised when the green and blue gumballs appear black!
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-409.jpg?itok=U_e5Hyki)
Secret Messages
Source Institutions
In this activity, learners use Teflon (PTFE) tape to write secret messages.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-688.jpg?itok=cgEsPCBc)
Slide Whistle
Source Institutions
In this activity, learners build a slide whistle using PVC pipe, bamboo skewer, and piece of foam. Construction of the instrument is relatively simple.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-510.png?itok=2QJ6-LL_)
Exploring Fabrication: Self-Assembly
Source Institutions
In this activity, learners participate in several full-body interactive games to model the process of self-assembly in nature and nanotechnology.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-362.gif?itok=Q4Lqdv7b)
Pictures From Light
Source Institutions
Did you know that using a lens one can bend light to make pictures of the world? It's true!
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-809.jpg?itok=1pqX8P1F)
3 Classes of Levers
Source Institutions
In this physics activity (page 3 of the PDF), learners will move a load using a lever of each of the 3 classes. They will explore the differences between these classes and which are more effective.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-019.jpg?itok=pT-VpR4T)
Clean Me Up, Snotty
Source Institutions
Learners will explore the chemistry of mucous and its importance to our health by following a process to make their own replica "snot." The activity includes a time and age recommendation, a materials
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-005-027.jpg?itok=wQAv64V8)
Cup Towers
Source Institutions
In this activity, learners explore different ways to stack cups to meet a personal goal.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-220.jpg?itok=KiOsfwBS)
Weather Vane
Source Institutions
In this meteorology activity, learners build weather vanes using straws, paperclips, and cardstock.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-951.jpg?itok=gdkKXOzq)
Fun with Shapes
Source Institutions
In this activity, early learners combine pre-cut recognizable shapes and their own abstract ideas to make representational pictures (e.g. houses, trees, shoes).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-448.jpg?itok=ycdycO8b)
Bubble Suspension
Source Institutions
In this activity, learners observe as soap bubbles float on a cushion of carbon dioxide gas. Learners blow bubbles into an aquarium filled with a slab of dry ice.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-100.jpg?itok=h5SyWtj2)
Dealing Signals
Source Institutions
In this activity, use standard playing cards to introduce learners to cellular interactions such as cell to cell recognition and signal and receptor specificity.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-449.jpg?itok=6yHFlt_u)
On the Fringe (formerly Bridge Light)
Source Institutions
In this activity, learners trap a thin layer of air between two pieces of Plexiglas to produce rainbow-colored interference patterns.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-458.jpg?itok=qiITeSH9)
A Closer Look at Crystals
Source Institutions
In this activity, learners compare different types of salt crystals under a magnifying glass.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-202.gif?itok=EO4zT5UA)
Glitter Globe
Source Institutions
This activity shows learners (with adult supervision) how to make a Glitter Globe, a fabulous toy that shimmers when you shake it.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-745.jpg?itok=5_yCnLxy)
Exploring the Solar System: Hide and Seek Moon
Source Institutions
"Exploring the Solar System: Hide and Seek Moon" is an engaging way for early childhood learners to experiment with some of the tools scientists use to study objects that are very, very far away, and
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-751.jpg?itok=CIuktqCO)
Ancient Sun Observations
Source Institutions
In this activity, learners make their own Sun tracker to explore how ancient civilizations around the world studied the Sun.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-349.png?itok=7krA5cTj)
Turbidity
Source Institutions
This is an activity about turbidity, or the amount of sediment suspended in water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-502.gif?itok=Z60BU9tY)
Single Replacement Micro-Reactions
Source Institutions
In this chemistry activity, learners use common chemicals and metals to explore single replacement reactions.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-363.gif?itok=tIMg4D2F)
Hoopster: An Airplane Made from Paper Hoops
Source Institutions
This activity provides instructions for making an aircraft that can really fly using a straw and paper hoops!