The Gilder Lehrman Institute is the leading nonprofit organization dedicated to K–12 history education while also serving the general public. Its mission is to promote the knowledge and understanding of American history through educational programs and resources.
Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more. It’s all free for learners and teachers
The Crash Course team has produced more than 32 courses on a wide variety of subjects, including organic chemistry, literature, world history, biology, philosophy, theater, ecology, and many more!
TED believes passionately that ideas have the power to change attitudes, lives, and ultimately, the world. TED-Ed is TED’s youth and education initiative. TED-Ed’s mission is to spark and celebrate the ideas of teachers and students around the world.