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 89,984
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CK-12
Updated: 
2016
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  • Math
  • Middle School
Find the common multiples of given pairs of numbers. <BR> common multiple MAT.ARI.176.L.1 multiple
  • Math
  • Middle School
Write numerical expressions to describe the product of a number and a sum of numbers. <BR> MAT.ARI.182.L.1 Numerical Expression Product Sum
CK-12
Updated: 
2016
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  • Math
  • Middle School
This resource offers Guidance, Guided Practice, Mixed Review, and Vocabulary.
  • Math
  • Middle School
This video compares positive and negative numbers using a number line.
CK-12
Updated: 
2016
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  • Math
  • Middle School
This Concept is all about scientific notation and how to write numbers using scientific notation. 8.EE.A.4
CK-12
Updated: 
2016
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  • Math
  • 3-5, MS
Here you'll learn how to figure out where to put the decimal point in a product when you multiply decimals. You will also find the product of two...
CK-12
Updated: 
2016
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  • Math
  • Middle School
Here you'll learn to find least common multiples of numbers by using lists. 6.NS.B.4
CK-12
Updated: 
2016
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Students will learn how to convert units from metric to English system and vice versa using dimensional analysis.
CK-12
Updated: 
2016
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  • Science
  • MS, HS
Students will learn about the differences between correlation (which means that two trends go together) and causation (means that one of those trends...
CK-12
Updated: 
2016
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  • Science
  • MS, HS
Students will learn to use observations and scientific experiments to test hypotheses.