Engr 2105 lab is very disorganized by DCCCD. This is only 1 credit hour but lecture belongs to this class is 3 credit hours. Interesting you can take lab before lecture and for lab pre-req is pre-calc and lecture pre-req is calc 2 and PHYS 2. Professors doesnt look your work even youre doing something wrong, she doesnt care and grade gives u 0.