On average, students complete about 2/3rds of a puzzle a minutes. That means that most students earn around 40 puzzles and hour, or 20 puzzles in a half-hour session. But students play at different rates!
On average, students complete about 2/3rds of a puzzle a minutes. That means that most students earn around 40 puzzles and hour, or 20 puzzles in a half-hour session. But students play at different rates!