Brownian Motion

In the 16 years that I spent at my last school, the caretakers rarely, if ever, dusted the top border of the chalkboard. I used their laziness to my advantage, revealing to students that it was evidence that the chalk particles from my constant erasing were small enough to be deflected upwards by the random... Continue Reading →

Turning a Demonstration Into a Detective Game

In doing chemistry demonstrations, entertainment should only be a side-benefit. If students are not encouraged to form hypotheses to figure out what happened, eventually they will get bored with the demonstrations, especially when better ones can easily be found on Youtube. (Albeit, there are arguments to be made for how a live one is always... Continue Reading →

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