Water What-ifs: Water Quality and Dissolved Oxygen
http://www.ncsu.edu/sciencejunction/depot/experiments/water/lessons/do/

April J. Cleveland, Science Junction, NC State University


This Science Junction website features general information and three lesson plans about dissolved oxygen geared toward middle and high school students. Lessons cover topics such as what dissolved oxygen is, why it is important, and how decomposition of organic material affects dissolved oxygen. The third lesson includes an activity in which students are instructed to design an experiment to test effects of changes in dissolved oxygen concentration. The lessons meet several National Science Education Standards, Delaware science standards, and North Carolina competency goals.

This resource is referenced here:
Subject: Biology, :Microbiology, Biogeochemistry, Geoscience:Hydrology:Surface Water:Water Quality/Chemistry
Resource Type: Scientific Resources:Overview/Reference Work, Activities:Classroom Activity
Grade Level: High School (9-12), Intermediate (3-5), Middle (6-8)
Topics: Biosphere:Biogeochemistry, Microbiology, Hydrosphere/Cryosphere:Surface Water:Water Quality/Chemistry, Biosphere:EcologyKeyword: DO