MA19.3.14

Mathematics (2019) Grade(s): 3

MA19.3.14
Interpret a fraction as a number on the number line; locate or represent fractions on a number line diagram.

Unpacked Content

Knowledge

Students know:

How to use fraction strips as a model to connect to finding fractional parts on a number line.
Fractions are numbers that can be represented on a number line.
Fractions can be placed on the number line by marking off equal parts between two whole numbers.
Fractions equal to 1 have the same numerator and same denominator.
Fractions greater than 1 have a numerator that will be greater than the denominator.

Skills

Students are able to:

Represent fractions on a number line.
Locate fractions on a number line.
Use a number line and partition an interval from 0 to 1 into equal parts as specified by the denominator of a fraction.
Represent a non unit fraction on a number line by marking off unit fraction lengths as specified by the numerator from zero.
Extend the number line to include fractions greater than one as a continuation of counting unit fractions.

Understanding

Students understand that:

A number line is a length model.
Fractions are numbers that represent a quantity less than, equal to, or greater than 1 and can be placed on a number line.
A number line can be partitioned to represent equal parts of a whole.

Vocabulary

Fraction
Number line
Number line diagram
Unit fraction
Interval
Partition
Point
Denominator
Numerator

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