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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CK-12
Updated: 
Friday, August 5, 2016 - 2:53pm
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Students learn to find the least common multiple of a given pair of numbers using lists.
CK-12
Updated: 
Wednesday, August 3, 2016 - 9:12am
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An introduction to chemistry with history, scientific method and areas of chemistry. The lesson contain information and assessment.
CK-12
Updated: 
Wednesday, September 21, 2016 - 9:06am
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Students will learn how energy can be generated through nuclear reactions. Energy from nuclear power also has benefits and costs.
CK-12
Updated: 
Thursday, August 11, 2016 - 12:24am
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Students learn to compare fractions using lowest common denominators.
CK-12
Updated: 
Friday, August 5, 2016 - 2:53pm
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Write and solve vertical subtraction problems with whole numbers. <BR> Difference, MAT.ARI.120.L.1, regroup, subtraction
CK-12
Updated: 
Friday, August 5, 2016 - 2:53pm
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Understand and solve problems with exponents. <BR> base cubed expanded notation exponent exponential form MAT.ARI.132.L.1 MAT.ARI.132.L.2 power...
CK-12
Updated: 
Friday, August 5, 2016 - 2:53pm
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Write repeated factors as powers. <BR> base cubed exponent MAT.ARI.134.L.1 power squared
CK-12
Updated: 
Friday, August 5, 2016 - 2:53pm
2 Comments
Evaluate and compare powers. <BR> base cubed exponent MAT.ARI.136.L.1 power squared
CK-12
Updated: 
Friday, August 5, 2016 - 2:53pm
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Write and solve division problems with whole numbers. <BR> dividend division divisor MAT.ARI.140.L.1 Quotient remainder
CK-12
Updated: 
Friday, August 5, 2016 - 2:53pm
1 Comment
Round whole numbers in order to estimate sums and differences. <BR> Difference estimation MAT.ARI.152.L.1 rounding Sum