Question about lectures

<p>In creating my schedule for next semester I notice that for one of my classes (specifically, MATH 115) that there are three different types of lectures available.</p>

<p>The first is 1.5 hours 3 days a week, the second is 2 hours 2 days a week, and the third is 2 hours 3 days a week. Is there any difference in how these are taught or how much material is covered in them? I'm not particularly great with mathematics, would it necessarily be more difficult to succeed in the 4 hr/week lecture than the 6 hr/week one?</p>