CK-12

Learn over 5,000 math and science concepts at your own pace and in your own style! (videos, assessments, interactive objects, etc) - Math subjects include: Arithmetic, Measurement, Algebra, Geometry, Probability, Statistics, Trigonometry, Analysis, and Calculus - Science subjects include: Earth Science, Life Science, Physical Science, Biology, Chemistry, and Physics - Other subjects include: SAT Exam Prep., Engineering, Technology, Astronomy, English, and History Features: -Access Common Core and State Standards aligned content (digital textbooks and concepts). -Browse, learn and practice (or teach) over 5000+ concepts using multiple modalities (text, videos, quizzes, flashcards and more). -Manage your class online through groups. -Assign practice to students and track their progress. -Everything on our app and website is always 100% Free. CK-12 Foundation is a non-profit that creates and curates high quality STEM content for students and teachers around the world. Access the full CK-12 website at https://www.ck12.org. Connect with us: Google +: https://plus.google.com/+Ck12Org Twitter: https://twitter.com/CK12Foundation Facebook: https://www.facebook.com/CK12Foundation