In this learning activity you'll explore Russia's Lake Baikal, the largest lake in the world.
Interpreting Line Graphs
By Barbara Laedtke
In this learning activity you'll analyze line graphs and answer questions about the information shown.
Amendments to the U.S. Constitution
By Mona Wenrich
Students explore the history of U.S. Constitutional amendments and the process involved in adding an amendment. In an interactive exercise, learners author their own amendments and explain why these should be added to the Constitution.
Sahel of Africa
By Virginia Kirsch
Students locate the seven countries in the Sahel region, which is between the Sahara and the coastal rain forests. They identify the famous city of Timbuktu in a map exercise.
The Amazon Rain Forest
Learners read about the world's largest rain forest. A map is provided.
Fluid and Electrolytes
By Patricia Stroupe
In this animated object, learners examine the structure and function of intracellular and extracellular fluid. They also read about the most common electrolytes in the body and complete a matching exercise to test their knowledge.
By Rosie Bunnow
In this scenario, learners put themselves in the place of a safety director at a local company. They watch video of an injury-causing incident and propose changes to company policies and procedures to try to maintain a safe environment.
Regulators of Blood Osmolality and Blood Volume
By Debbie Heinritz
In this learning object, you will learn about four blood osmolality and volume regulators, their sites of production, their sites of action, and the results of those actions.
Torque Sequence of Two Mating Surfaces
By James Bourassa
In this interactive object, learners demonstrate the proper tightening sequence for mechanically joining two mating surfaces.
By Kathleen Lee
In this animated and interactive object, learners conduct an experiment online to illustrate how a greater number of particles in a "vessel" increases osmotic pressure.
A quiz about water, hydration, dehydration, and the human body.
Test your knowledge of environmental issues
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