This is a math website helpful to any middle grades educator who is teaching the 6th grade. The site has interactive quizzes, activities, explanation, math dictionary, and many other math related things.
This is more of a place to organize your already created lesson plans that way your school computer doesn't get so crowded or so your desk isn't a mess. They do have a link that will help you create lesson plans. Also on this website they have links to puzzles or activities for classroom ideas.