Do you want to flip your classroom but don't want to make the video? You can find tons of videos already made for any age, subject and length. Here is a wonderful example for a kindergarten classroom made by Megan Anderson, a kindergarten teacher at Red Lion School District. Notice how she introduces the topic, explains how to do it and then offers several opportunities for the students to practice. When you follow this framework, creating screencasts are easy. Even better, screenr.com offers this service for free!
Make sure to check back to Megan's screenr channel for more great videos.