The very first class I attended at MIT was 7.012, four and a half years ago in the fall of 2011. I remember how excited my fellow freshmen felt in Maseeh dining that morning, how tightly the Infinite was packed with students finding new classrooms, and how crowded 26-100 was once my friends and I got there. But looking back on that first class, I cannot actually recall much of what the professor said. Or really much from any other 7.012 lecture. Or from 18.02 lectures that fall or 5.111 lectures the following spring. Why is that? I have a fairly good memory, and in four years it shouldn’t seem reasonable for me to forget the material. I suspect that I don’t remember what was taught in these three classes because all of them were rigid lecture-based classes. Although these were core freshman science classes, there was little to no student engagement through hands-on learning.