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khanacademy.org

Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.

physicsclassroom.com

The Physics Classroom serves students, teachers and classrooms by providing classroom-ready resources that utilize an easy-to-understand language that makes learning interactive and multi-dimensional. Written by teachers for teachers and students, The Physics Classroom provides a wealth of resources that meets the varied needs of both students and teachers.

chegg.com

Innovative learning tools. 24/7 support. All in one place. Homework help for relevant study solutions, step-by-step support, and real experts.

quizlet.com

quizlet makes simple learning tools that let you study anything. start learning today with flashcards, games and learning tools — all for free.

coursera.org

Coursera has a deep commitment to making a positive impact on society. Learn more about how our social impact program provides access to high-quality education for communities in need.

edx.org

Find the online learning path for you, delivered by world-class institutions like Harvard, Google, Amazon, and more.

wolframalpha.com

Step-by-step solutions, homework help, practice problems, web apps. For math, physics, chemistry, biology, engineering, economics, astronomy, statistics.

mathway.com

free math problem solver answers your algebra homework questions with step-by-step explanations.

symbolab.com

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studocu.com

studocu provides access to millions of study materials shared by university and high school students from over 60 countries. join the community today!