У вашего броузера проблема в совместимости с HTML5
Recreated a video to help my kids sing "Did you have a nice vacation?" I do not own the music. The music is from a lesson out of an Elementary English text book in Korea. I re-did it to fit my classrooms interest because frankly the dancing people is annoying...if you want to know what I mean check out ESOLNEXOS youtube page...or Aarirang's page...I think this keeps my kids focused...haha. Hope it helps your kids too. Happy Teaching...