In this lesson, Jared uses a guitar, xylophone, bottle of water and rulers to show us how the pitch of sound changes. Are you a teacher? Click this link for free resources to use in the classroom related to this topic: https://sites.google.com/temple.edu/funscience/home Check out more videos like this on our channel FunScienceDemos, and do not forget to subscribe and click the bell to stay updated on new videos! https://bit.ly/16zEpWc There is so much more to explore on our companion website! Check out the link below for additional resources meeting Next Generation Science Standards for elementary through high school: http://new.learningscience.org/wp/