Cell Respiration

As a medical toxicologist, students learn about cell respiration to save the life of a CIA agent that has been poisoned.


As a physician assistant, students must learn about diffusion to save the life of a person poisoned by chlorine gas that was released into a small town following a train crash.


As a veterinary technician, students learn about enzymes to help a dog that has been eating normally but is losing a lot of weight.


Working as a CDC researcher, students investigate an outbreak of multi-drug resistant bacterial infections and determine how evolution was involved by tracing the source and cause of the outbreak.


As a geneticist in an animal hospital, students learn about genetic changes in meiosis to determine the reason why a male cat can have calico fur coloring.


As a veterinarian, students help a young calf, named Clark, who is having seizures. To determine the cause, the students fly into Clark's brain to learn about osmosis and apply their learning to save Clark.


As a marine biologist students learn about photosynthesis to help scientists in Australia determine why the coral in the Great Barrier Reef is bleaching.

About STEM Cases

Students assume the role of a STEM professional trying to solve a real-world problem.

They use scientific practices to collect and analyze data, and form and test a hypothesis as they solve the problem.

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Real-time Reporting

Each STEM Case uses real-time reporting to show live student results.

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About Handbooks

Each STEM Case level has an associated Handbook.

These are interactive guides that focus on the science concepts underlying the case.

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