Here are some of the screencasts I created and posted to YouTube for students in my classes at Bridgewater.  Some of them have over 200,000 views now.  There are more than 1,000 people who have subscribed to my YouTube channel:

Using the Rectangle Model on the SmartBoard to show:

Using Pattern Blocks to show:

SmartBoard Use:

Creating a Class Website with WordPress:

Setting up Your Own Moodle Course:

Using Excel to create a Class Gradebook: