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Mathematics & Algebra
From basic arithmetic to calculus, geometry, and statistics. Step-by-step lessons, practice problems, and homework help for every level.
Online Courses & Tutorials
Free, self-paced educational courses to build real skills and knowledge across dozens of subjects.
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Science & STEM
Physics, chemistry, biology, and earth science. Interactive experiments, study notes, and exam preparation for students.
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Coding & Programming
Learn Python, JavaScript, HTML, CSS, and web development with beginner-friendly coding tutorials and projects.
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Languages
Master English, Spanish, French, and more with vocabulary, grammar, and conversation practice lessons.
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History & Social Studies
World history, geography, civics, and economics explained clearly with timelines and study guides.
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Test Prep & Exams
SAT, ACT, GED, and college prep resources. Practice tests, study tips, and exam strategies to boost your scores.
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Arts & Design
Drawing, music theory, graphic design, and creative fundamentals taught through approachable tutorials.
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Business & Finance
Personal finance, economics, entrepreneurship, and career skills for students and adult learners.
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Health & Biology
Human biology, nutrition, psychology, and wellness lessons grounded in clear, accurate science.