In the US k-12 math seems to be taught as a skill to pass tests and little else. Maybe if you're lucky you'll use some calculus or algebra in science classes.

In the US k-12 math seems to be taught as a skill to pass tests and little else. Maybe if you're lucky you'll use some calculus or algebra in science classes. And it's taught in a lock-step sequence. If you fall behind, it is generally impossible to catch up. Lower division mathematics in universities seems to be taught either for math majors (the important people, selected based on whether they already know the course material), science and engineering majors (the plug and chug contingent), and everyone else (as a "weeder" course to discourage students from continuing in mathematics, science or engineering.) Instructors view the course as an exercise in effort minimization and student sorting. A similar approach is often used in basic science and engineering courses as well. The "weeder" course is a wonderful metaphor because it casts so many students in the role of "weeds" - harmful and worthless invaders who need to be pulled out by the roots, shredded and burned (or perhaps dumped into a compost heap, if the university is environmentally inclined.)