Almost as much as they want. Attached to each C&M campus class is an instructor and an undergraduate class assistant. About 2/3 of the C&M class meetings are in labs in which the instructors and class assistants work one-on-one with their students. To get a consultation during lab time, all a student has to do it to raise a hand. Everyone gets to know each other in a way impossible in the lecture model of teaching, Frequently the friendships built in C&M extend way beyond C&M itself.
C&M calculus has made me understand Economics and actually like it. Most people cringe when they hear that I am an Econ major, and I think their reaction results from the fact that they really don't understand it. Never have I used complex equations in Economic applications, but what I have learned visually from C&M calculus helps me understand graphs and concepts inclass everyday. This comprehension has made me realise the incredible logic behind economics, and now the subject fascinates me.
Techs support both the lab machines and the software used in this program.
In the event of a problem, send an e-mail to tech@cm.math.uiuc.edu.