Teachers are always looking for pre-made resources for their subject area. Sometimes you are just looking for ideas, and sometimes you have to give youself some PD.
All of these needs are met at PPPS - a massive repository of high quality powerpoints and links to other ppt sites. Ranging across subject areas there are powerpoint to use in class or for PD in the staff room, or just to learn something new. Backup documents are also available - worksheets, fact sheets and quizzes.
A huge resource that can easily be turned into a TurningPoint resource with a few well placed interactive slides.