I think that Flocabulary is an excellent resource. It presents vocabulary and more compex ideas in a school friendly rap. You can use it as a hook or as a mid-lesson wake them up (especially in a 90 minute class). It has excellent ancillaries. I've also used it for tutorials after school and on Saturdays. It has a free trial period, but the monthly cost is reasonable.
The kids go away humming. Here's the website: www.flocabulary.com
Flocabulary is great! I used to use this all the time with my 6th grade world cultures classes. It is a great way to keep their focus and they really enjoy the rap!
I am so excited to use this resource! What a great way to emphasize vocabulary in our classrooms! :)