In their physics main lesson block, 6th grade students witness sound made visible as they experiment with a Chladni Plate and violin bow. To see images that can be formed during acoustic experiments with Chladni Plate and violin bow, and to watch a video clip of the experiment, click on this link:
https://www.physics.ucla.edu/demoweb/demomanual/acoustics/effects_of_sound/chladni_plate.html