I used the online course to review topic 6 and i found it extremely useful. The videos were short, straightforward without feeling rushed. The best thing was that the answers to the quizzes where explained in videos, which really allowed me to understand where my mistake and weaknesses are.
I benefited the most from the calculator help videos, there were really great tricks that I used to save time during paper 2 exam. – F.N., English College in Prague, Czech Republic