Teacher Discussion Forums

I have a bunch of elementary kids (ages 8-13) at beginner level and was wondering how to... I guess, how to capture the whole class but still differentiate activities so that they're not harder for some students and easy for others. I'm teaching at a private coaching college, so I have several small classes of anywhere from 2 to 10.

Yeah, sorry, I'm sure this is Newb Teacher Question #1, but I'm having trouble. Thanks in advance.