What I learned about waves and optics is basically what a wave is. A wave is a disturbance that moves through a medium either longitudinal or transversal style. I also learned the different parts of a wave like the wavelength(distance between two crests) and the amplitude(height of the crest). What I learned about optics is concave and convex lenses. I had no idea how those worked and how they made things far and near.
What I found difficult about what we studied was just about everything. Everything we studied gave me trouble this unit but I found with some hard work, and getting help, I was able to at least loosely grasp the concepts. If I had to choose one thing that was the hardest I would say lenses because it took me a long time to understand how the lenses affected light that passed through them.
My problem solving skills in this unit definitely became more profound. I realized that if I kept working on a problem and applied what I had learned in class, many problems I found hard would become simple. This was a major help to my problem solving skills.