Fire and heavy electronic beats may not be the first things you'd associate with a children's classroom lesson. The team at science/tech blog Veritasium met with a group of "physics and chemistry demonstrators" that combined all three in an audio visualizer they tour around to help demonstrate the shape and intensity of various sound waves. Turns out it's just as cool for adults as it is for the kiddos.
By creating a pyro board of Ruben's Tubes—essentially rows of Bunsen burners (see above)—that moonlights as a sound board, it's easy to see the flames jump as the different soundwaves pass over it.
In Veritasium's video, the first half address how the entire thing works and the second half consists of music and lots of fire (if you're just in it for the flames, make sure to stick around past the first half). Check it out:
Clearly, it's something that wasn't meant to be recreated in the comfort of our own homes. For even more science/tech eye candy (An anti-gravity wheel! Non-Newtonian fluid on a speaker!), check out Veritasium's Youtube page.