This is just a sample video of one teacher who has smartphone uploaded a lesson in order to make it available to other teachers so that they can provide constructive feedback to the teacher. The teacher wants to become better and so is open to receiving supportive critiques from other teachers. Research has demonstrated that peer video observations help to improve instruction.
Go to: https://fresheyesvts.brio.viddler.com/groups/701/media/japan-kindergarten-guest-teacher-english to view sample