MentorMob - Learn What You Want, Teach What You Love - MentorMob. TeachersPayTeachers.com - An Open Marketplace for Original Lesson Plans and Other Teaching Resources. Videos, Common Core Resources And Lesson Plans For Teachers: Teaching Channel. Educreations - Teach what you know. Learn what you don't. Make online flashcards & notes. Study anywhere, anytime. Shmoop: Homework Help, Teacher Resources, Test Prep.