英语翻译，求大神解读

On the other hand, to see the faces light up, as they occasionally do, to even get them excited so that maybe they can do a little mathematical experimentation themselves——thats possible, on a limited scale, even in a calculus class。另一方面，为了看到他们偶尔会照亮的脸，甚至让他们兴奋，以便他们自己也可以做一些数学实验 - 即使在微积分课程中，也可以在有限的范围内进行。