【實用教育app】CK-12|最夯免費app

Raise your grades.

Learn and Practice Math and Science concepts at your own pace with thousands of free quizzes, lessons, simulations, interactives, and real world examples.

CK-12 Foundation is a non-profit that creates and curates high quality STEM content for students and teachers around the world.

Features:

- Choose from a comprehensive library of elementary, middle and high school concepts in math and science, or search by keyword.

- Improve over time and see your progress with reports across concepts.

- Get recommendations for learning resources.

Topics covered:

- Elementary Math:

* Addition, Subtraction, Multiplication and Division

* Time

* Measurement

* Geometry

* Place Value

* Decimals and Fractions

* Money

* Factors and Multiples

* PEMDAS

- Math:

* Arithmetic

* Measurement

* Algebra

* Geometry

* Probability

* Statistics

* Trigonometry

* Analysis

* Calculus

-Science:

* Earth Science

* Life Science

* Physical Science

* Biology

* Chemistry

* Physics

See all of our learning resources, including free digital textbooks, at http://www.ck12.org

Twitter: https://twitter.com/CK12Foundation

Facebook: https://www.facebook.com/CK12Foundation

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