Search Results
Showing results 281 to 300 of 430
When is a Glass of Water Really Full?
Source Institutions
In this activity, learners see how many coins they can add to a full glass of water before the water overflows.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-420.jpg?itok=K94f-LNL)
Weight For It!
Source Institutions
In this activity about weights and balances, learners create their own balance using paper cups. Then, learners explore how to compare the relative mass of objects.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-078.jpg?itok=xbxst93a)
Hot Stuff!: Investigation #2
Learners test two jars containing hot water, one covered with plastic and one open, for changes in temperature.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-243.png?itok=mZfX0F2d)
Changing Body Positions: How Does the Circulatory System Adjust?
Source Institutions
In this activity about how the body regulates blood pressure (page 117 of the PDF), learners make and compare measurements of heart rate and blood pressure from three body positions: sitting, standing
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-150.gif?itok=DUpHncIo)
Aluminum Boats
Source Institutions
Test the buoyancy of an aluminum foil boat and an aluminum foil ball. Why does the same material in different shapes sink or float?
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-674.jpg?itok=Xaq65pjk)
Head Harp
Source Institutions
Put a string around your head, and play it! Learn about vibration, sounds, and pitch.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-578.png?itok=Vd6I9maN)
Shadow Play
Source Institutions
In this three part activity, learners explore and experiment with shadows to learn about the Sun's relative motion in the sky.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-916.jpg?itok=2gxlNoUr)
Paper Table
Source Institutions
In this design challenge activity, learners use tubes of newspaper to make a table that’s at least eight inches tall and strong enough to hold a heavy book!
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-378.jpg?itok=jK0wMkRS)
Defining Dissolving
Source Institutions
In this introductory activity, learners discover that sugar and food coloring dissolve in water but neither dissolves in oil.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-310.png?itok=3XhkT87c)
Super Golf Tower
Source Institutions
In this engineering activity, challenge learners to build a tower out of 10 sheets of newspaper and 3 feet of masking tape, which can hold a golf ball balancing at the top.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-304.png?itok=6Px2WRcD)
Glider
Source Institutions
In this activity, learners construct paper airplanes that twist and turn.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-282.png?itok=ntwezJoy)
Telescopes as Time Machines
Source Institutions
This fun, nighttime hands-on astronomy activity lets learners explore how long it takes for light from different objects in the universe to reach Earth.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-283.jpg?itok=3n7stoLx)
Supernova Star Maps
Source Institutions
This fun astronomy activity allows learners to experience finding stars in the night sky that will eventually go supernova. This activity is perfect for a star party outdoors.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-657.png?itok=UDbNV7vv)
Shake and Match
Source Institutions
In this activity, learners create a hearing based memory game that they can share with friends.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-383.jpg?itok=qBTbSEXV)
Two Ears are Better Than One: Sound Localization
Source Institutions
This activity (9th activity on the page) about hearing demonstrates to learners the importance of having two ears.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-243.jpg?itok=rJFRlAkN)
Condensation
Source Institutions
In this activity, learners explore the process of condensation.
Send Secret Messages
Source Institutions
In this activity, learners write a secret message in "invisible ink" and then use chemistry to view the writing.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-093.gif?itok=M-8h0YN1)
Make Your Own Deep-Sea Vent
Source Institutions
In this activity, learners make a model of the hot water of a deep sea vent in the cold water of the ocean to learn about one of the ocean's most amazing and bizarre underwater habitats.
Let's Go Ice Fishing
Source Institutions
In this activity, learners are challenged to lift a floating ice cube out of a glass of water using just one end of a piece of string.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-001.png?itok=Z7MAJxl2)
Super Shrinkers
Source Institutions
In this activity on page 14 of the PDF (Rethinking the 3 R’s: It’s Easy to be Green), learners turn plain pieces of recycled plastic into shrunken works of art.