Search Results
Showing results 1 to 20 of 284
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-383.jpg?itok=PVsEW8VY)
Cleaning with Dirt
Source Institutions
Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-912.jpg?itok=h-u2R7Pa)
Fizzy Nano Challenge
Source Institutions
This lesson focuses on how materials behave differently as their surface area increases.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-381.jpg?itok=Cl7PdKew)
Latent Prints
Source Institutions
In this activity, learners examine fingerprints. Learners leave a hidden print on a surface and then make their own print detecting powder from graphite (found in pencils).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-245.jpg?itok=nvNRUaXm)
Matter on the Move
Source Institutions
Learners observe and conduct experiments demonstrating the different properties of hot and cold materials.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-330.jpg?itok=ItPXDz8V)
Changing the Density of a Liquid: Adding Salt
Source Institutions
Learners see that a carrot slice sinks in fresh water and floats in saltwater.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-123.jpg?itok=zRRMGepL)
How Much Water is in that Cloud?
Source Institutions
In this activity, learners working in pairs saturate a cotton ball using water drops from an eyedropper to demonstrate the high water capacity of clouds.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-402.png?itok=v2ac4sWe)
Best Bubbles
Source Institutions
In this activity, learners experiment with creating various types of bubble solutions and testing which ingredients form longer-lasting bubbles.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-998.gif?itok=sAM3kuGJ)
Density: Make a golf ball float!
Source Institutions
In this activity (on page 2 of the PDF), the learner places a golf ball between salt water and colored fresh water. The golf ball is not as dense as the saltwater.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-697.jpg?itok=s_fVhoWG)
Statistics: Wet Heads
Source Institutions
In this math lesson, learners learn how to construct stem and leaf plots. Learners first estimate the number of drops of water that will fit on the head of a penny.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-039.jpg?itok=K7pcJq_8)
Hull Engineering
Source Institutions
In this activity, learners explore how the hull shape impacts a ship's performance and stability.
Currently Working: Testing Conductivity
Source Institutions
Visitors test solutions of water, sugar, salt, and hydrochloric acid and the solids salt and sugar. They clip leads from the hand generator to wires immersed in each substance.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-849.jpg?itok=iTolLPQh)
Making a One-Second Timer
Source Institutions
This lab activity has learners create a pendulum with a one-second period.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-332.jpg?itok=pYNKIPOI)
Comparing the Density of an Object to the Density of Water
Source Institutions
Learners compare the weight of equal volumes of wax, water, and clay. Learners discover that since the wax weighs less than an equal volume of water, it is less dense than water and will float.
Investigating Density Currents
Source Institutions
In this lab activity, learners explore how to initiate a density current. Learners measure six flasks with different concentrations of salt and water (colored blue).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-069.jpg?itok=IPYhDCRy)
Watching Crystals Grow
Source Institutions
Learners will compare the growth rate and appearance of crystals forming on small rocks to those growing on miscellaneous objects. Learners will also investigate how temperature (warm vs.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-519.png?itok=Jm5Ed5iy)
Water Clean-up
Source Institutions
This is an activity (located on page 3 of the PDF under Water Clean-up Activity) about the use of reduction agents to decontaminate ground water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-333.jpg?itok=LfEYC6s_)
Defining Density
Source Institutions
In this introductory demonstration and activity, learners are introduced to the concept of density as they explore a rock and a wooden block in water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-327.jpg?itok=nd8tBZJq)
Changing the Density of an Object: Changing Shape
Source Institutions
Learners will see that changing the shape of an object, like a clay ball, that is more dense than water, can affect whether the object will sink or float.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-791.gif?itok=uKnL0c9f)
Plot the Dot: A Graphical Approach to Density
Source Institutions
In this activity, learners work in groups to determine the mass and volume of four samples: glass marbles, steel washers or nuts, pieces of pine wood, and pieces of PVC pipe.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-544.png?itok=LawHMldb)
Surface Area and Soda Geysers
Source Institutions
This is an activity (located on page 4 of the PDF under Surface Area Activity) about surface area and reactivity.