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 90,564
Downloads 1,471
CK-12
Updated: 
2016
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  • Math
  • Elementary (Grades K-2)
Basic Addition, one digit addition http://CK12.org
CK-12
Updated: 
2016
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  • Elementary (Grades K-2)
Three to Six Digit Addition http://ck12.org
  • Math
  • Elementary (Grades K-2)
Adding Three Numbers with 2, 3, and 4 digits http://ck12.org
  • Math
  • Elementary (Grades K-2)
Estimation of Whole Numbers and Addition http://ck12.org
CK-12
Updated: 
2016
0 Comments
  • Math
  • Elementary (Grades K-2)
Measurement Tools http://ck12.org
CK-12
Updated: 
2016
0 Comments
  • Math
  • Elementary (Grades K-2)
Students learn to add and subtract positive and negative numbers.
CK-12
Updated: 
2016
0 Comments
  • Math
  • Elementary (Grades K-2)
Students will write and solve vertical addition problems with whole, multi-digit numbers.
CK-12
Updated: 
2016
0 Comments
  • Math
  • Elementary (Grades K-2)
Students will write and solve vertical subtraction problems with whole, multi-digit numbers.
CK-12
Updated: 
2016
0 Comments
  • Math
  • K-2, 3-5
Students write and solve multiplication problems with whole, multi-digit numbers.