With support from Google, WGBH is conducting a STEM Teacher Video Challenge for Massachusetts teachers to submit short videos (1-5 minutes) that demonstrate STEM concepts, experiments, or best practices.  Since our post last October, the deadline has been moved back to midnight on March 1 and a new introductory video has been posted to explain the online training that is available and how to submit entries.  Entries may be old or new but must be made by the submitter.  Winners will receive an iPad or document camera for their classrooms, and their videos will be shared nationally by WGBH and PBS Learning Media.  All participants will receive Google Play app cards.   You can see the videos submitted to date on the WGBH STEM Video Challenge Youtube channel.