Lesson 25


Understand fractions as numbers.

Common Core Standards

Core Standards


  • 3.NF.A — Develop understanding of fractions as numbers.

Criteria for Success


  1. Develop understanding for fractions as numbers.
  2. Justify why fractions are numbers using a variety of reasoning (MP.3).

Tips for Teachers


  • Lesson 25 is intended to address the cluster level expectations for 3.NF.A, namely, “develop understanding of fractions and numbers.” Since Anchor Task #1 is quite extensive, it is the only Anchor Task for the lesson. The lesson could consist entirely of the discussion regarding Anchor Task #1, or a Problem Set and Homework can be designed to review much of the work of the unit. The Target Task is optional, as well, depending on whether Part B of Anchor Task #1 feels sufficient for students to demonstrate their understanding of fractions as numbers.
  • There is no Problem Set assigned for this lesson. The first task linked below is aligned to today’s objective. The rest of the resources are more of a comprehensive review or performance task addressing all of the content throughout the unit thus far. It is at your discretion which resources, if any, you use to create a Problem Set and Homework.

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  • Student Handout Editor
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Anchor Tasks


Artie said: “Choose a number between 1 and 10.

Kay said: “3/2.”

Artie: “That’s not a number! It’s a fraction.”

Kay: “But fractions are numbers!”

Part A

Are fractions numbers? Take this quiz and decide.

a. Is it possible to add two fractions?

Yes No Don't Know

b. Is it possible to add a fraction and a whole number?

Yes No Don't Know

c. Is it possible to place a fraction on the number line?

Yes No Don't Know

d. Is it possible for a fraction to equal a whole number?

Yes No Don't Know

e. Is it possible to add two fractions and have the sum be a whole number?

Yes No Don't Know

Part B

Based on your answers, do you agree with Artie or with Kay? Write one or two sentences to explain why.

Guiding Questions

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Achieve the Core Are Fractions Numbers?

Are Fractions Numbers? by Student Achievement Partners is made available by Achieve the Core under the CC0 1.0 license. Accessed March 19, 2019, 11:38 a.m..

Modified by The Match Foundation, Inc.

Target Task


Are fractions numbers? Explain why or why not.

Mastery Response


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