Each unit contains video lessons addressing a topical question considered relevant and important to the student. The lessons concludes with the "Big Idea" - the primary concept within the lesson. Students can view the lessons as many times as deemed necessary to to master the material before completing formative questions.
Students get immediate feedback and may review lessons for retaking formative assessments. Grades are based on the average of all attempts rewarding students for mastery even if it takes more than one try.