The flipped classroom is becoming increasingly popular. Here is an example of a lesson that could be used for a virtual classroom. It also might be beneficial to post on a class website for students to use as a resource while they complete their homework.
The lesson below teaches how to find the area. It is intended for fifth grade, but could be used for any grade level covering area.
The video was created on a site called
Educreations. It is available online and as a free app in the iTunes App Store. On the program, teachers can create slides, narrate, record, and upload their lessons.