Teacher-friendly YouTube.com/Teachers has hundreds of playlists of videos that align with common educational standards, organized by subject and grade. These playlists were created by teachers for teachers so you can spend more time teaching and less time searching.
GoNoodle...Brilliant Brain Breaks for the Busy Classroom. Our class BEGS for this multiple times each day! We make them a deal...Quiet, focused workers get to Go Noodle! #workseverytime #classmanagement