Podcasts+and+Education

I can see podcasts as very useful in the classroom. One of the ways I would like to use them is to review math concepts with the students. I would create a podcast for each specific math topic and post it along with links to sites that allow the students to have practice with the concept. I would also like to do podcasts that give students directions to using certain things in my class and on my class website. This will be very useful especially since I will not be starting the school year with my students due to my maternity leave. This could help me connect with my students while a substitute is in my class.