Spaced repetition
Review
Skills you've completed come back for a quick check at 1, 3, 7, 14 and 30 days, so what you learn in Unit 1 is still there when you need it in Unit 8.
Spaced repetition
Skills you've completed come back for a quick check at 1, 3, 7, 14 and 30 days, so what you learn in Unit 1 is still there when you need it in Unit 8.