Curated OER
Determination of Water Hardness
Students investigate water hardness. In this water hardness lesson plan, students determine the water hardness in 4 samples of water after buffering each. By using titration and an indicator, students can determine the amount of calcium...
Curated OER
Water
Students conduct a series of investigations on the unique properties of water. In this general science lesson, students explain what causes water's surface tension. They explain the different stages in the water cycle.
Curated OER
Water Hardness- Causes and Testing
Eighth graders examine what materials cause water hardness and the relative measure of water hardness in a two part lab activity. In part one, 8th graders add an assigned soap test solution to eleven different test tube solutions in...
US Geological Survey
Usgs: Ground Water: Wells
Wells are extremely important to all societies. Find out how wells are dug today and peruse the list of the different types of wells and the methods used to dig them. Click Home to access the site in Spanish.
PBS
Pbs: Water Quality Control Center: Rough Science: Rough Science Adventure
A team from the PBS show Rough Science Adventure have produced tests to determine attributes of water. Simple experiment guides will investigate pollution, mineral content, whether there are organisms living in the water, how to create a...