So the time I have is 9:00 - 2:00 on saturdays. But I don't want to have the lecture day for my mathematics club too long. But I want it long enough so that the whole club can prepare for future mathematics competitions. So I need enough time for the entire year to teach the whole club: differential equations, discrete mathematics, and some linear algebra. I am also available on fridays 2:45 - 5:00. How should I organize the times? Should I separate the lecture days for my club into two different days? I really want to let them have enough time to prepare.