1. Download some FREE math lessons via @HungryToTeach at http://hungryteacher.com/
  2. (NP) 89 lesson plans and ideas for teaching math - http://coolcatteacher.blogspot.com/2012/08/89-lesson-plans-and-ideas-for-teaching.html
  3. (NP) tes - Math resources and lesson plans divided up by grade level - http://www.tes.co.uk/maths-secondary-teaching-resources
  4. (NP) 50 Teaching and Lesson Plans that Rock - http://coolcatteacher.blogspot.com/2012/08/50-teaching-and-lesson-plans-that-rock.html and Teach This! Teaching with Lesson Plans and Ideas that Rock - http://coolcatteacher.blogspot.com/2012/08/teach-this-teaching-with-lesson-plans_27.html
  5. (NP) Math Corner has lesson plans for every math class at:
    http://www.lessoncorner.com/Math
  6. (NP) Angry Birds in the math classroom
  7. (KR) - Great blogs posted by Tom DeRosa dating back to July 2007. This blog contains ideas covering many math concepts (geometry, algebra, etc) and there even is a search box that one can conviniently use to find a different approach to teaching specific topics. After running across this blog, I have it bookmarked and it will be one of my main websites I will go to when I am stumped with teaching a concept in a unique way. http://www.teachforever.com/
  8. (ES) http://www.pbs.org/wgbh/nova/education/resources/subj_07_02.html is a great website created by PBS Online with interactive applications of mathematics. The website is a part of NOVA Teachers on the PBS website. The lessons, activities, videos, and problems on this website connect mathematics to history, science, geography, and many other disciplines.