Resources and Tools for Elementary Math Specialists and Teachers

Common Core State Standards for Mathematics

Grade(s) 3 resources related to the following standard:
Number and Operations—Fractions
Develop understanding of fractions as numbers.
3. Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.
c. Express whole numbers as fractions, and recognize fractions that are equivalent to whole numbers. Examples: Express 3 in the form 3 = 3/1; recognize that 6/1 = 6; locate 4/4 and 1 at the same point of a number line diagram.

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In this 6-minute video Keith Phelps shows a lesson in which he has his fourth grade students decompose fractions to show one and a half in multiple ways. Students are given a variety of fraction tiles to complete this activity and are asked to build it, draw it, and write a number sentence for their solution. In addition to the video a transcript is provided.
Activity, Video
Grade Level: 3, 4, 5
This webpage links to a Java applet that enables students to build fractions, make equivalent fractions, compare fractions, and complete addition and subtraction of simple fractions with like denominators. The applet includes a variety of levels of challenge and representation. The webpage also includes a downloadable applet, a PowerPoint presentation on how to use the simulation, a PDF lesson plan, and a series of eight student recording sheets in PDF format.
Activity, Interactive Media, Lesson Plans
Grade Level: 3, 4, 5