Khan Academy offers a wide range of video tutorials and practice exercises covering various subjects.
Quizlet provides a platform for creating and accessing flashcards and quizzes on different topics.
Project Gutenberg offers a collection of free e-books, including educational materials.
BBC Bitesize offers resources for students across different subjects and grade levels.
Librivox provides free audiobooks of public domain literature.
NASA for Students offers educational resources and activities related to space and science.
TED-Ed provides lessons worth sharing, featuring educational videos and discussions.
National Geographic Kids offers educational games, videos, and articles on science and geography.
Study.com provides online courses, study guides, and resources for various subjects.