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Showing 13 results for dissolved oxygen ...
Coral Reefs: Ecosystems Dissolving
- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade

Corals face in our modern world, a great threat due to a projected change in water chemistry in the ocean due to global warming. Just as carbon dioxide (the main greenhouse gas causing global warming) is increasing in the air, it also increases in seawater in its dissolved form. That makes seawater more acidic which, in turn, may slow the rate at which corals build their calcium carbonate skeletons.
"Algae: It Feeds, Kills and Dies" Plant Activities: 4-6th Grade
- Type: Lesson Plan
- Grade Levels: Upper Elementary: Third Grade through Fifth Grade

Our "Plant" unit is broken into six lesson plans, each taking from 20 minutes to several class periods to complete, and targeted mainly at 4th-6th grade students. A class needn't complete every lesson in the unit, though some lessons do refer to one another and are better done in sequence. However, each lesson comes with its own set of objectives and resources.
What's in the Water?
- Type: Lesson Plan
- Grade Levels: High School: Ninth Grade through Twelfth Grade

Water quality is measured using many physical, chemical, and biological assessments. In this lesson, introduce your students to five water chemistry tests. Students will become familiar with pH, nitrates, phosphates, dissolved oxygen and turbidity and their relationship to the Cuyahoga River Watershed. They will begin to understand acceptable test value ranges, make connections between water quality and the biological community and become familiar with the causes of poor water quality.
Cave Cracks
- Type: Student Activities
- Grade Levels: Middle School: Sixth Grade through Eighth Grade
A "cool" demonstration using a block of ice to simulate carbonic acid dissolving away a cave.
Virtual: Grades 6-8: Marine Chemistry
- Type: Distance Learning
- Grade Levels: Middle School: Sixth Grade through Eighth Grade
Channel Islands Live Dive: 5th Grade
- Type: Distance Learning
- Grade Levels: Upper Elementary: Third Grade through Fifth Grade
LESSON 11: OD POR ODELIA
- Type: Lesson Plan
- Grade Levels: High School: Ninth Grade through Twelfth Grade
Od Por Odelia was written by LeRoy Etienne as an ode to his mother who told him this story. In the tale an old man sells her rotten bananas. But dishonest conduct brings bad luck, and the old man dies soon thereafter.
- Type: Lesson Plan
- Grade Levels: Middle School: Sixth Grade through Eighth Grade
Meeting the Fire Triangle
- Type: Lesson Plan
- Grade Levels: Upper Elementary: Third Grade through Fifth Grade
Tort Liability: Franke v. City of St. Louis
- Type: Field Trips
- Grade Levels: Upper Elementary: Third Grade through Fifth Grade

Frederick Franke was injured in St. Louis when part of a building fell on his head as he was walking. Tragically, he died as a result of his injuries. His mother, Julia Franke, sued the owner of the building and the City of St. Louis for damages. This case was heard in 1888 in the St. Louis Courthouse (the Old Courthouse). Students will reenact the case and hear from all sides.
Death Traps
- Type: Teacher Reference Materials
- Grade Levels: Middle School: Sixth Grade through Eighth Grade

This scripted slideshow for teachers describes the process by which animals have died and become fossilized in waterholes, influenced by a severe drought. It compares two sites, separated by 13 million years: Agate Fossil Beds and the Badlands. It is designed to teach students the principles relating to the behavior, habitat and survival of living animals; as well as scientific study of past life forms known as fossils; and severe climatic events.
Ike and the Men of D-Day (Virtual Program)
- Type: Distance Learning
- Grade Levels: High School: Ninth Grade through Twelfth Grade

Explore the "Great Crusade" with General Eisenhower and the Men of D-Day in this virtual education program. Students will discover the events of D-Day through the leadership principles of General Eisenhower and the sacrifices of real soldiers who fought and died on D-Day. This program gives students a chance to examine primary source documents and research real D-Day casualties who are buried in Gettysburg National Cemetery.