Search Results
Showing results 1 to 9 of 9
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-901.jpg?itok=Ita0cTBF)
Straining Out the Dirt
Learners take on the role of environmental engineers as they design water filters.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-682.jpg?itok=9HXjoYow)
How Big is Small
Source Institutions
In this classic hands-on activity, learners estimate the length of a molecule by floating a fatty acid (oleic acid) on water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-999.png?itok=aHeVhK_0)
Water Wire: Electricity Flowing Through Water
Source Institutions
In this activity on page 10 of the PDF, learners detect the amount of energy that can flow through a sodium chloride electrolyte solution with a light sensor.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-955.jpg?itok=Mtt7d2U-)
Under Pressure
Source Institutions
In this experiment, learners examine how pressure affects water flow. In small groups, learners work with water and a soda bottle, and then relate their findings to pressure in the deep ocean.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-954.gif?itok=V9iFbnvM)
Using Solar Energy
Source Institutions
In this activity, learners discover how solar energy can be used to heat water.
Build A Hydrometer
Source Institutions
In this activity, learners will explore how a hydrometer works by building a working model and conducting experiments.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-031.png?itok=b_4fZEGw)
Cleaning Water with Dirt
Source Institutions
In this activity on page 7 of the PDF (Water in Our World), learners make their own water treatment systems for cleaning water.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-573.png?itok=Nc0XmVZy)
Water Treatment
Source Institutions
Water treatment on a large scale enables the supply of clean drinking water to communities.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-000-820.jpg?itok=SsjsJ1j1)
Giving Water the Treatment
Source Institutions
In this ecology activity (page 8 of the PDF), learners explore how to filter contaminated water using a variety of materials.