4th Grade Videos - Extend understanding of fraction equivalence and ordering.

Explain why a fraction a/b is equivalent to a fraction (n x a)/(n x b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions.

Compare two fractions with different numerators and different denominators, e.g., by creating common denominators or numerators, or by comparing to a benchmark fraction such as 1/2. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model.

Screenshot Name / Description Flag? Rating
Multiplying Fractions
Introduction to multiplying fractions (5:33)
Khan - Fraction Equivalence
Determine if the two fractions are equivalent (2:30)
Khan - Fraction Equivalence 2
Determine if one fraction is >, <, or = to the another (7:08)
Khan - Intro to Fraction Equivalence
Walk through a visual depiction of fraction equivalence (5:50)
Khan - Fractions in Lowest Terms
Work with Sal to reduce a fraction to lowest terms (5:42)

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