Nitrogen Cycle

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Nitrogen Cycle STEM Case

An infant on a farm has blue baby syndrome. As an EPA environmental engineer, students must find the cause of the baby's illness. Using environment data, students learn the importance of the nitrogen cycle and how human factors can impact nature.

STEM Cases are interactive explorations in which students practice problem-solving and critical thinking as they solve a real world problem as a STEM professional.
  • View students results in realtime.
  • Cases take 30-90 minutes to complete.
  • Student progress is automatically saved.
  • Complete in multiple sessions.

STEM CASE

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Student progress is automatically saved so that STEM Cases can be completed over multiple sessions.

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LevelDescriptionEstimated Time
High School  This version is for general biology classes 40-50 min
AP  This version is for AP level classes 60-80 min

Expanded Handbook

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Most content from the Expanded Handbook is included in the corresponding STEM Case.

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LevelDescriptionEstimated Time
High School  The Expanded Handbook covers amino acid structure, ammonia dissolving in water (ammonia vs. ammonium), and the need for ATP in the synthesis of ammonia by nitrogenase, in addition to the concepts covered in the handbook section of the High School Case 15-20 min
AP  This Handbook is identical to the handbook section in the AP Case 20-25 min

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