## 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 at: www.ck12.org/teacher

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## Basic Addition Video

CK-12
Updated:
2016
0 Comments
• Math
• Elementary (Grades K-2)
Basic Addition, one digit addition http://CK12.org

## Three to Six Digit Addition

CK-12
Updated:
2016
0 Comments
• Elementary (Grades K-2)
Three to Six Digit Addition http://ck12.org

## Adding Three Numbers with 2, 3, and 4 digits

CK-12
Updated:
2016
0 Comments
• Math
• Elementary (Grades K-2)
Adding Three Numbers with 2, 3, and 4 digits http://ck12.org

## Estimation of Whole Numbers and Addition

CK-12
Updated:
2016
0 Comments
• Math
• Elementary (Grades K-2)
Estimation of Whole Numbers and Addition http://ck12.org

## Measurement Tools

CK-12
Updated:
2016
0 Comments
• Math
• Elementary (Grades K-2)
Measurement Tools http://ck12.org

## Addition of Integers

CK-12
Updated:
2016
0 Comments
• Math
• Elementary (Grades K-2)
Students learn to add and subtract positive and negative numbers.

## Whole Number Addition

CK-12
Updated:
2016
0 Comments
• Math
• Elementary (Grades K-2)
Students will write and solve vertical addition problems with whole, multi-digit numbers.

## Whole Number Subtraction

CK-12
Updated:
2016
0 Comments
• Math
• Elementary (Grades K-2)
Students will write and solve vertical subtraction problems with whole, multi-digit numbers.

## Whole Number Multiplication

CK-12
Updated:
2016
0 Comments
• Math
• K-2, 3-5
Students write and solve multiplication problems with whole, multi-digit numbers.