PBS Math Club is a new YouTube channel in which students can watch and interact with math videos. Each of the videos contains a series of math lessons and challenge activities. To complete a challenge students click on the video to answer questions. If they answer correctly, they move on to the next question. If they answer incorrectly students are shown another video clip that explains the correct answer. Watch one of the videos below.

Applications for Education
PBS Math Club is just getting started. As more content is added to it, it could become a good source of flipped lesson materials. The videos utilize the YouTube annotations tool which you could also use to create your own series of interactive video lessons.