CK-12

CK-12 provides open-source high quality K-12 learning platform to help teachers provide learning opportunities for students globally. Free access to 5000+ high-quality, customizable educational concepts in multiple modalities (text, videos, quizzes, images etc.) suited to different learning levels will allow teachers, students and others to innovate and experiment with new models of learning.

Learn more about CK-12 at: https://www.ck12.org/teacher/

Lessons 668
Views 90,560
Downloads 1,471
  • Middle School
Students learn how advances in agriculture have been able to sustain larger human populations.
  • Middle School
Students learn about the consequences of the Green Revolution, and how over-consumption impacts Earth systems.
CK-12
Updated: 
2016
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  • Middle School
Students will learn about sustainable development, which requires requires humans to live more consciously to meet its goals. Students also explore...
CK-12
Updated: 
2017
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  • Science
  • Middle School
Students will learn that the Moon has an internal structure and surface landforms that include terrae and maria.
CK-12
Updated: 
2016
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  • Middle School
Students learn about Sun's basic properties. Our Sun is a star undergoing nuclear fusion in its core.
CK-12
Updated: 
2016
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  • Middle School
Students will learn to identify the layers of the Sun's interior. The internal layers of the Sun, which are made of plasma, include the location of...
CK-12
Updated: 
2016
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  • Middle School
Students explore the surface features of the Sun, including sunspots, solar prominences, solar flares and coronal mass ejections.
CK-12
Updated: 
2016
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  • Middle School
Students will explore how heat moves through the different outer layers of the sun.
CK-12
Updated: 
2016
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  • Science
  • Middle School
Students learn about the force of gravity and the role it plays in our solar system. Gravity is the attraction of two objects that is dependent on...
CK-12
Updated: 
2016
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  • Science
  • Middle School
Students will compare the different characteristics of inner planets and outer planets. The inner planets tend to be smaller and solid, while the...