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.||35-45 min|
|AP Free||This version is for ap classes.||50-70 min|
Most content from the Expanded Handbook is included in the corresponding STEM Case.
|High School||The Expanded Handbook covers electronegativity, polar covalent bonding and periodic trends, in addition to the concepts covered in the handbook section of the High School Case.||20-30 min|
|AP||This Handbook is identical to the handbook section in the AP Case||30-45 min|