What concepts were you “meant” to be learning? Doesn’t the content of the lectures give you a clue as to the educators’ intent? Are you aware that Bézier curves cover many fundamental CS topics, such as recursion, function evaluation, function approximation, numerical analysis, linear algebra, root finding, and more? Do you know they’re used heavily in a lot of software you use? (Browsers, font rendering, maps, nonlinear numerical libraries, UI frameworks, games, etc.)