Math expressions lesson 3.4 why does digit by digit division work?
In this video I compare digit by digit division to place value sections. This explains to the students why the shortcut method digit by digit works. It helps reinforce the understanding of the digit by digit method.

I show this video after I teach digit by digit division. I let them experiment and try out digit by digit and try to figure out the connection before I actually teach it to them. I also send this video out to the parents so they can understand the concept of division that we are trying to teach the students.

I hope this video helps busy teachers who need to know the core content of the math expressions lesson. I also hope that it serves as a resource for your students who need to watch the lesson one more time or even watch it at home while they are doing their homework.