If you have not checked out LearnZillion, I highly recommend it. They have lots of video lessons and lesson plans for most standards. One of the application requirements was to create a 3 minute video lesson using the LearnZillion format that focused on a grade level standard. I chose a grade 1 standard:
1.OA.7-Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false. For example, which of the following equations are true and which are false? 6 = 6, 7 = 8 - 1, 5 + 2 = 2 + 5, 4 + 1 = 5 + 2.
The video lesson does not follow the entire LearnZillion format. It just focuses on the core lesson component. The following is my video submission: