Curated OER
How Soft or Hard is Your Water?
Learners test samples of water to determine how a chemical water softener affects water's ability to form suds. After collecting their data and analyzing their results, students answer follow-up questions about their lab.
Curated OER
Bonneville Salt Flats Ecosystem
Students discuss the annual ecosystem changes of the Bonneville Salt
Flats and the artificial changes made by man.They observe the annual ecosystem changes and the current additional flooding of the Bonneville Salt Flats by man.
Curated OER
Science Lesson #2
Fourth graders explore and experiment with objects that float to see if they float differently in salt water or fresh water. After the experiment, they write a paragraph in their science journal explaining how fresh water and ocean water...
Curated OER
Getting the Minerals Out
Students explore the tissues of the bone. They discuss bone composition and physiology. Students perform experiments to compare and contrast the decalcifying properties of several liquids.
Curated OER
Testing for Conductivity
Students test the conductivity of selected liquids and solids. They test the circuit by touching the two free ends of the wires together and add salt little by little recording the data after each addition. Finally, students predict...
Curated OER
Blood, I Presume?
Students explain the value of blood in trials. In this DNA lesson students work together to collect and share information and ideas that they come up with after learning how to distinguish blood from other stains.