Ten questions follow an informational reading about galaxies. Feedback is instant, and a progress report appears at the end.

Eight questions follow an informational reading about the Tyrannosaurus Rex. Questions are multiple-choice and provide instant feedback.

Four questions follow an informational reading about the planet Mars. Scholars receive instant feedback and a progress report at the end of the practice. 

How diverse are living things? Individuals explore topics such as cells as the foundation for life, cell division and genetics, molecular biology, and animal reproduction using an open resource Biology textbook. They learn key terms...