As a high school student I struggled to stay awake in Science classes. I've paid the price as an adult, as I sometimes have to spend hours boning up on stuff online to address my knowledge deficiencies.
I can't blame my teachers, even if their voices and methodologies really did have anaesthetic properties, but I sure wish I had a teacher like Alom Shaha. As seen in this (unembeddable) video produced by the National STEM Centre and the Institute of Physics, Shaha relates how he conceived of the idea to make the contraption pictured above to teach his students about transverse wave motion "in a visual and engaging manner." He then whipped it up in about fifteen minutes using skewers, a roll of tape and gummy bears. MacGyver's got nothing on this guy.
via becky stern