Education World is a complete online resource that teachers, administrators and school staff can visit each day to find high-quality and in-depth original content. The site is updated daily, offering:
Houghton Mifflin Harcourt is a textbook company. This site shows short videos covering everything from Math, English, and Science.
A nonprofit with the mission to provide a free, world-class education for anyone, anywhere. To get started as a student: https://www.khanacademy.org/resources/students/resources-for-students/a/getting-started-with-khan-academy
To see what kind of courses, standards, and classes offered: https://www.khanacademy.org/resources/teacher-essentials/our-content/a/our-subjects-standards-and-classes
Bring National Geographic to your classroom through lesson plans, maps, and reference resources for all subjects, covering grades Pre-K through 12.
Provide educators, parents, and afterschool professionals with access to the highest quality practices in reading and language arts instruction by offering the very best in free materials. Sponsored by International Literacy Association, National Council of Teachers of English (NCTE), and The Verizon Foundation.
Resources, training, and support to assist caregivers, teachers, and students as they face new learning challenges. Understand history, art, culture, and the sciences through inquiry and analysis. Educators can create interactive experiences.
How to get started: https://learninglab.si.edu/help/for-teachers/discover