If your son doesn't understand something and gets a question wrong, dreambox will show him an example to show them how to solve it. There is also a help button that they can press.

I think there has only been a couple of times my daughter really didn't understand something on dreambox and I had to show her. I did not show her on dreambox because the program adapts to your child's understanding (i.e. if you do the problem for them on DB it will think the child understands and move them on ahead). So I explained the concept to her off the computer, then let her solve the problems on dreambox on her own.