Student progress is automatically saved so that STEM Cases can be completed over multiple sessions.
|High School Free||This version is for high school classes.||40-50 min|
|AP Free||This version is for ap classes.||60-80 min|
Most content from the Expanded Handbook is included in the corresponding STEM Case.
|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|