ANDERSON – After showing a video of a Rube Goldberg machine that could turn a newspaper page, Dave Perrel carefully poured vinegar into an empty pop bottle and stretched a balloon containing a spoonful of baking soda over the opening.
The Anderson High School physics and engineering teacher then asked his audience of 15 students how they would get the vinegar and baking soda to mix. Impatiently, the students told him to dump the contents of the balloon into the bottle.
But Perrel wasn’t looking for the obvious.
“What if I pulled a string? Do you think that would work?” he asked. “What if I knocked that over on its side. Would that work?”
Leading an Anderson Science Olympics 2017 summer camp, Perrel coaxed students who just completed…