Review
Every question you miss comes back: tomorrow, then after 3 and 7 more days, then 21. Get it right and it moves up the ladder; miss it and it starts again. Below that is your mistake log, grouped by what went wrong.
Every question you miss comes back: tomorrow, then after 3 and 7 more days, then 21. Get it right and it moves up the ladder; miss it and it starts again. Below that is your mistake log, grouped by what went wrong.