Since we were on the subject of manipulating equations this week, I thought I'd share this other tidbit with you... I've had plenty of students who could recite F=ma and could readily solve for F, given m and a. But, given F and a, they lacked the understanding of how to solve for m. This little trick solved a lot of problems (and even students capable of solving for m enjoyed using this). Draw a triangle and divide the triangle into three parts by drawing a T in it (see below). Now fill in...
