Discrete Mathematics

I’ve been having some serious trouble with my Discrete Mathematics class and thought I could use some advice from here.

Just recently, I clocked in about 20 hours of studying for my Discrete Mathematics midterm few days prior and ended up scoring only 55% on it… The test consisted of mathematical induction, elemental/algebraic set proofs, and functions. I talked to some of my friends who told me they’ve only studied a few hours before the test and they ended up scoring higher than I did (only by a few points but still).

Has anyone else here have a similar problem that I’m currently facing? How did you overcome it? I am willing to practice every day in order to get at least B in this class (I need a B or else I can’t change my major to comp sci).

BTW, I didn’t just memorize answers from the textbook, I actually took the time to understand how the proofing techniques worked as well as the theorems… I’ve also heard from other people that discrete mathematics is soo easy and they didn’t even have to study hard for it and scored higher than me. How does that work? Do I just need to practice more? Or is there a certain way of thinking that I don’t have (naturally/through practice)?

@squawkbox16 as cliche as it sounds, the best way to prepare is to just solve lots of problems. It’s one thing to know what a proof by induction is; it’s another thing to actually find the inductive step and present it well. Also, solving a wide variety of induction problems (not just from the textbook) helps.

Same thing goes with many other topics, such as the Pigeonhole principle - it is an extremely obvious theorem that is often taught in a discrete math course, but there are quite a few interesting and challenging problems you can solve using PHP.

I just got back my exam… I messed up on all the EASY questions that I KNEW how to do. I was so nervous when taking that test, I couldn’t even think straight. :confused:

I only get this nervous taking tests from this class, but not chemistry or calculus 2. This really sucks. Studying helped me a lot but overthinking and rushing made so many mistakes.

@MITer94 's advice is pretty much the “technique” I use. Most concepts are math are understood by doing the problems - either from the textbook, or from a variety of textbooks. I usually check out a bunch of textbooks from the library to supplement my readings and problems, which I’d recommend doing as well.