Creating Common Denominators

This tutorial explores the addition and subtraction of fractions with unlike denominators. Using the number line, this mathematical process can be easily visualized and connected to the final strategy of multiplying the denominators (a/b + c/d = ad +bc/bd). The video number line does show negative numbers which goes beyond elementary standards so an elementary teacher would need to reflect on whether this video will enrich student knowledge or cause confusion.

Resource ID#: 122856 Type: Tutorial

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Direct Link: http://whyu.net/media/download/Pre-Algebra%2014%20-%20Creating%20Common%20Denominators%20-%20small.mp4

General Information

Subject(s): Mathematics

Grade Level(s): 5, 6

Intended Audience: Educators , Students

Suggested Technology: Computer for Presenter, Computers for Students, Internet Connection, Interactive Whiteboard, Speakers/Headphones

Instructional Time: 10 Minute(s)

Keywords: unit fractions;, number line;, common denominator;, addition;, subtraction;, unlike denominators

Instructional Component Type(s): Tutorial, Video/Audio/Animation,

Instructional Design Framework(s): Direct Instruction

Resource Collection: Secondary Math specific existing tutorials

Aligned Standards

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