What is a Part Per Million?
Students examine parts per million. They discuss a local public water system's Consumer Confidence Report, conduct an experiment that produces one part per million of "pollutant" in tap water, and complete worksheets.
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What's the Difference Between Accuracy and Precision?
While often used interchangeably, the distinction between accuracy and precision is critical for many scientific endeavors. Discover the importance of consistency for precise results, and the need for accuracy in the field of research,...
5 mins 6th - 12th Science CCSS: Adaptable
Density Column Lab - Part 2
Groups suspend objects within layers of liquids to determine the densities of different liquids and compare them to the densities of objects calculated in Part 1. The groups then carefully test their calculations by layering the liquids...
7th - 9th Science CCSS: Designed