A frustrating fact for teachers everywhere...you can keep the attention of an audience for about 10 minutes.  After that, attention levels drop dramatically.  Every 10 minutes you will need to find a way to re-engage the attention of your audience.   

"You must do something emotionally relevant at each 10-minute mark to regain attention." - Dr. John Medina

Learn more about the "10-minute rule" at the Brain Rules Web site.

PowerPoint Presentation