Adding and Subtracting Fractions

With a pie graph and an infinite blackboard, this video shows how to add, subtract, and simplify fractions. Once he has established the rule, Sal throws the viewer a curve ball with a fraction subtraction problem that results in a negative number.

Concepts

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adding fractions, common denominators, fractions, fractions unlike denominators, subtracting fractions, subtraction

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Additional Tags

adding fractions, common denominators, subtracting fractions, different denominators, math

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Resource Details

Grade

7th - 9th

Subjects

Math

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Resource Type

Instructional Videos

Media Length

9:50

Audiences

For Teacher Use

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Instructional Strategy

Flipped Classroom

Usage Permissions

Creative Commons

BY-NC-SA: 3.0