Are you looking for that perfect 3 to 5 minutes clip to kick off your Math or Science lesson? Or maybe a short discussion starter to keep your students' interest high? I think "The Futures Channel" might be the solution. Each videoclip has an associated page with a lesson idea and a downloadable PDF that you can use with your class. The material is appropriate for Intermediate and above. There are also some interesting Pro-D clips of Kay Toliver and Jamie Escalante speaking about Math instruction, and even modeling a lesson. (sample here)
