Recently, a co-worker of mine shared a story from when he was in high school. During one chemistry class his teacher happened to light a small fire within a dish and began stirring in different compounds. First the fire turned green, then purple, and then finally blue. The students, who normally struggled to engage with the coursework, were completely enthralled. They began asking questions, forming hypotheses, and started investigating the subject themselves. A fire had been lit in that classroom – both literally and metaphorically.
