From the 1200s through the 1600s, parts of Europe were afflicted with deadly, mysterious outbreaks of seemingly contagious, unstoppable dancing.

In this lesson, students use exponential decay and rational functions to understand why addicted patients seek more and stronger opioids to alleviate their pain.

More people in the U.S. died from opioids in 2016 than the peak year of the AIDS epidemic. So how did we get here?

America’s got an opioid problem. So where do we go from here?