CK-12

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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 at: www.ck12.org/teacher

Total lessons: 668

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(11 Ratings)

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1436
CK-12
Updated: 
Friday, August 5, 2016 - 2:53pm
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  • Math
  • 3-5, MS
Students learn how to to identify and apply number properties in the addition and multiplication of decimals.
CK-12
Updated: 
Thursday, August 11, 2016 - 12:23am
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  • Math
  • 3-5, MS
Students learn how to add and subtract decimals by lining up the decimal point.
CK-12
Updated: 
Friday, August 5, 2016 - 2:53pm
0 Comments
  • Math
  • 3-5, MS
Students learn how to express combinations of coins as decimal amounts.
CK-12
Updated: 
Thursday, August 11, 2016 - 12:23am
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  • Math
  • 3-5, MS
Students learn to subtract decimals by lining up the decimal points.
screenshot of pdf
CK-12
Updated: 
Wednesday, March 6, 2019 - 10:37am
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  • Middle School
Students how tornadoes form, their effects, and how they are measured. Tornadoes, which form from thunderstorms, are twisting masses of air that can...
CK-12
Updated: 
Thursday, January 12, 2017 - 9:18am
1 Comment
  • Science
  • 3-5, MS
Students will learn what configurations of the Sun, Moon and Earth leads to solar and lunar eclipses and what happens during them.
CK-12
Updated: 
Wednesday, September 21, 2016 - 9:06am
1 Comment
Students will learn how energy can be generated through nuclear reactions. Energy from nuclear power also has benefits and costs.