Factoring with the Factor Tree

This Java applet presents a composite number, and prompts you to factor it -- one step at a time. Enter one factor, prime or another composite; the applet calculates the remaining factor, and branches two boxes below any composite factor so that you may proceed factoring until you obtain the full factorization into primes, which the applet colors in green. Click the "Repeat problem" button to see that different factor trees for a given number still result in the same prime factorization.

Resource ID#: 30261 Type: Tutorial

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Open Resource Page

Direct Link: http://www.cut-the-knot.org/Curriculum/Arithmetic/BTreeTesting.shtml

General Information

Subject(s): Mathematics

Grade Level(s): 5

Intended Audience: Educators

Keywords: prime, composite, factor tree

Instructional Component Type(s): Tutorial

Resource Collection: NSDL

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