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- 3.NF.A.1Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.
- 3.NF.A.2Understand a fraction as a number on the number line; represent fractions on a number line diagram.
- 3.NF.A.3Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.

- 3.NF.A.2aRepresent a fraction 1/b on a number line diagram by defining the interval from 0 to 1 as the whole and partitioning it into b equal parts. Recognize that each part has size 1/b and that the endpoint of the part based at 0 locates the number 1/b on the number line.
- 3.NF.A.2bRepresent a fraction a/b on a number line diagram by marking off a lengths 1/b from 0. Recognize that the resulting interval has size a/b and that its endpoint locates the number a/b on the number line.

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3rd Grade Math

Â» Unit:

Fractions: More Than A Whole

Big Idea:What happens when there is more than one whole? How does one represent more than a whole? This lesson explores creating more than one whole by using iteration of unit fractions.

Is 1/3 Always Equal to 1/3?: A Journal Exercise

3rd Grade Math

Â» Unit:

Comparing Fractions

Big Idea:Applying knowledge already learned is an important step in becoming a fluent math student. This journaling exercise stretches children to use concepts previously introduced.

Basic Fractions on a Number Line (Thirds, Sixths, Tenths)

3rd Grade Math

Â» Unit:

Fractions

Big Idea:Students create number lines to represent benchmark fractions.

Musical Fractions- An Introduction

3rd Grade Math

Â» Unit:

Musical Fractions

Big Idea:Students use math, music and technology in this engaging lesson on fractions!

Show What You Know: A 2 Day Assessment

3rd Grade Math

Â» Unit:

Comparing Fractions

Big Idea:After a large unit like fractions, it is important to assess the students ability to apply and communicate their knowledge. These two very different activities will help you assess and record your student's learning according to the Common Core Standards.

Basic Fractions on a Number Line (Divisible by Two)

3rd Grade Math

Â» Unit:

Fractions

Big Idea:Students create number lines to represent benchmark fractions.

Musical Fractions - Interpretation & Creation (1)

3rd Grade Math

Â» Unit:

Musical Fractions

Big Idea:Students use math, music and technology in this engaging lesson on fractions!

Fractions Formative #1

3rd Grade Math

Â» Unit:

Fractions

Big Idea:A formative assessments of critical area #2 to drive the differentiation of instruction, help students reflect on their progress, and enable effective communication with parents.

Musical Fractions- Interpretation & Creation (2)

3rd Grade Math

Â» Unit:

Musical Fractions

Big Idea:Help students make the natural connection between music and math!

Musical Fractions - Creation

3rd Grade Math

Â» Unit:

Musical Fractions

Big Idea:Musical learners will benefit from this alternative approach to representations of fractions. To quote a student, "NOW I get it!"

Musical Fractions - Presentation & Evaluation

3rd Grade Math

Â» Unit:

Musical Fractions

Big Idea:Music is another avenue for learning about math and can help students discover the structure of fractions in a new way!

3.NF.A.2a

Represent a fraction 1/b on a number line diagram by defining the interval from 0 to 1 as the whole and partitioning it into b equal parts. Recognize that each part has size 1/b and that the endpoint of the part based at 0 locates the number 1/b on the number line.

3.NF.A.2b

Represent a fraction a/b on a number line diagram by marking off a lengths 1/b from 0. Recognize that the resulting interval has size a/b and that its endpoint locates the number a/b on the number line.