Search Results
Showing results 161 to 180 of 313
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-927.jpg?itok=ARgq2d6A)
Instant Ice
Source Institutions
In this activity, learners observe a quick phase change as water rapidly goes from a liquid state to a solid state.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-393.jpg?itok=k8ORMFUB)
How Many Pennies?
Source Institutions
In this activity (pages 13-14), learners investigate the properties of smart materials, which are materials that respond to things that happen around them.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-682.jpg?itok=ZZU0OcSj)
Solar Energy
Source Institutions
In this activity (page 11 of PDF), learners compare the air pressure within a dark and a light bottle both heated by the sun, and discover that solar energy can be collected and stored in many ways
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-678.png?itok=KUwm04GA)
Masses & Springs
Source Institutions
In this online activity, learners use a realistic mass and spring laboratory. They hang masses from springs and adjust the spring stiffness and damping.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-629.jpg?itok=xR-TwGNa)
Liquid Lens
Source Institutions
In this activity, learners discover that they can create a lens from a water drop. Learners test their lens by looking at words or pictures.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-778.jpg?itok=072xX2ON)
Rubber Bones
Source Institutions
Over 1 or 2 days, learners use vinegar to remove the calcium from a chicken bone. They then explore how the bones have changed. An accompanying video with Mr.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-295.jpg?itok=EUCBF12d)
Mystery Writing: Write and develop a secret message
Source Institutions
Learners write an invisible message using lemon juice on a piece of paper. They then develop the message by soaking the paper in a dilute iodine solution.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-615.jpg?itok=U8ER1iZ2)
Polishing Pennies
Source Institutions
In this experiment, learners try different liquids to see which ones clean pennies best. Liquids to try include water, lemon juice, cola, vinegar, and dishwashing detergent.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-790.jpg?itok=rfI4RZoG)
You're Grounded
Source Institutions
In this engineering activity, learners test the stability of towers they build out of cups, discovering that structures with more mass in the base are more stable.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-974.png?itok=pGOj_CCM)
Fruit Juice Mystery
Source Institutions
In this chemistry challenge, learners work to figure out which of four juices are real, and which is just food coloring and sugar.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-497.jpg?itok=D_Wc-lFz)
Ice Cream
Source Institutions
In this chemistry activity, learners use the lowered freezing point of water to chill another mixture (ice cream) to the solid state.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-676.jpg?itok=uDzzQpC1)
Indicating Electrolysis
Source Institutions
Electrolysis is the breakdown of water into hydrogen and oxygen. This Exploratorium activity allows learners to visualize the process with an acid-based indicator.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-391.jpg?itok=QG8lsgYh)
Candy Chromatography
Source Institutions
Learners analyze candy-coated sweets using chromatography. Learners use this method to separate the various dyes used to make colored candy.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-285.png?itok=bsQq5_8r)
Indicator Paper
Source Institutions
Use grape juice, baking soda, water and vinegar to make acid and base indicator paper! This activity contains a recipe and instructions for the indicator paper.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-450.jpg?itok=9-nlFNmB)
Stepping Out: Hop, Skip, Jump
Source Institutions
In this activity, learners explore and experiment how we can use our bodies everyday to get from one place to another.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-096.jpg?itok=L8PXzkZP)
Color Me Blue
Source Institutions
In this activity, learners add dilute bleach solution to water that has been dyed with yellow, blue, and green food color.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-233.jpg?itok=Z9DOcBkL)
Rollin’ Rollin' Rollin'
Source Institutions
In this physics activity (page 12 of the PDF), learners explore potential and kinetic energy by rolling different sized marbles down an inclined plane.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-975.png?itok=63gJPi36)
Finding Red
Source Institutions
In this chemistry challenge, learners systematically investigate which combination of four solutions produces a deep red color.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-582.jpg?itok=Wfj5iTbO)
Penny Drop
Source Institutions
In this quick activity about the properties of water (page 1 of PDF under SciGirls Activity: Malformed Frogs), learners will use an eyedropper to slowly place one drop of water at a time onto a penny,
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-424.jpg?itok=4g_hitS2)
Hover Cup
Source Institutions
Is this activity concentrating on physical science, learners build their very own miniature hovercraft out of a paper cup. Using it, they can explore the concepts of friction and force.