CK-12 Info

Subjects

Math

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Geography

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Government

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U.S. History

Community Contributed content is created by users of the CK-12 platform.

World History

Community Contributed content is created by users of the CK-12 platform.

Philosophy

Community Contributed content is created by users of the CK-12 platform.

Sociology

Community Contributed content is created by users of the CK-12 platform.

College

College Algebra

College Precalculus

Linear Algebra

College Human Biology

The Universe

Adult Education

Basic Education

High School Diploma

High School Equivalency

Career Technical Ed

ESL

Country

Translations

Explore

PRODUCTS

Flexi | AI Tutor

A FREE digital tutor for every student

FlexBooks 2.0

New, interactive platform

FlexBooks

Customizable, digital textbooks

Adaptive Practice

Personalized practice questions

Simulations

Interactive Science Simulations

PLIX

Play. Learn. Interact. Xplore.

Study Guides

Quickly review concepts

TEACHER RESOURCES

Webinars

Browse live training sessions

Certified Educator Program

Become CK-12 Certified!

Certified Trainers

Browse CK-12 Certified Trainers

Schools

Find schools & districts near you

INTEGRATIONS

Google Classroom

Canvas

Schoology

Standards

NGSS

Next Generation Science Standards

CCSS

Common Core State Standards

OTHER RESOURCES

Specialized Learning