In this study we analyze students' understanding of two-variable function; in particular we consider their understanding of domain, possible arbitrary nature of function assignment, uniqueness of ...

Stellar athletes, successful entrepreneurs, and motivational speakers like to say that pressure makes diamonds. The higher the stakes and the harder the circumstances, the thinking goes, the more ...

Cause and effect. We understand this concept from an early age. Tug on a pull toy's string, and the toy follows. Naturally, things get much more complicated as a system grows, as the number of ...