Free online courses

Courses take you through a subject in order: short lessons with notes, worked examples and videos, each followed by a quick MCQ quiz so you know the idea has stuck.

How courses work

A course is divided into units and lessons. Each lesson shows how long it takes, and finishing its quiz marks it complete. Your progress, quiz scores and the time left are saved, so you can stop on your phone and continue on a computer.

Courses are written by teachers on PrepOasis; each course page shows who wrote it, how many students are enrolled and how they rated it.