Kids TV 123 - many nice educational songs and videos for children for major efl concepts: ABC, Numbers, Colours, Baby Animals and others. There is always a minute at the lesson to watch a 2-3 min video illustrating some vocabulary or grammar thing - a good way to make a lesson more interesting, dynamic and productive.
British Council|Learn English Kids offers
Grammar Videos section where Gran helps the girl understand how to use English grammar. There are the scripts and worksheets available. The introduction to a video tells what grammar it is about. These videos could be a nice way to introduce or practice, or even test students' knowledge.
