Organizing content/ resources. WatchKnowLearn - Free Educational Videos for K-12 Students. 40 Open Education Resources You Should Know About. Share My Lesson - Free K-12 Resources By Teachers, For Teachers. Educator - PowerMyLearning. Free K-12 Lesson Plans, materials and resources. Discovery Education. TeachersPayTeachers.com - An Open Marketplace for Original Lesson Plans and Other Teaching Resources. Free video lectures,Free Animations, Free Lecture Notes, Free Online Tests, Free Lecture Presentations.