Creating Dynamic Lessons using Microsoft Office Mix

Office Mix is a free add-in for PowerPoint that lets you use PowerPoint to create and share interactive web videos.  It’s an easy way for teachers to turn their existing PowerPoint lessons into flipped and blending learning resources. With Office Mix, you can add voice, video, digital ink, assessments, and simulations to your lessons, and share them with your students.

http://www.teachercast.net/tep84/