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  1. Science | Khan Academy

    Learn science using videos, articles, and TEKS-aligned practice exercises. Review the fundamentals of matter and energy, forces and motion, Earth's systems and processes, living …

  2. Best Science Courses & Certificates [2026] | Coursera

    Science courses can help you learn fundamental concepts in biology, chemistry, physics, and environmental science, as well as applied areas like genetics, chemical reactions, and …

  3. 35200+ Science Online Courses for 2025 - Class Central

    Learn from top universities on edX and Coursera, covering everything from nuclear energy and complexity theory to science communication and open research practices.

  4. Science Courses - Online Classes with Videos | Study.com

    Study.com has engaging online science courses in biology, chemistry, physics, environmental science, and more!

  5. Science Courses | Harvard University

    Backyard Meteorology: The Science of Weather Learn to forecast the weather just by looking out your window.

  6. IXL Science | Learn science online

    Discover the world of science with hundreds of skills covering K to Physics grade and unlimited questions that adapt to each student's level.

  7. Best Online Science Courses and Programs | edX

    Science is the foundation for understanding nearly everything we know about how and why humans exist. Whether you’re pursuing a new career or are curious about a specific branch of …