Greatest Common Factor

The Factor Game
http://illuminations.nctm.org/ActivityDetail.aspx?ID=12

Sliding Factor Game
http://www.visualmathlearning.com/Games/sliding_factors.html

BrainPOP video/ Factoring:
http://www.brainpop.com/math/numbersandoperations/factoring/preview.weml


Greatest Common Factors Online Course:
http://e-learningforkids.org/Courses/EN/M1104/index.html


Greatest Common Factor YouTube video:
http://www.youtube.com/watch?v=guMCJ792UF0&feature=related

Greatest Common Factor online quiz:
http://school.discoveryeducation.com/quizzes8/mrforbes/GCF.html

Greatest Common Factor worksheet
http://www.mathslice.com/simple_gcf_lcm.php

Factor Trees
http://nlvm.usu.edu/en/NAV/frames_asid_202_g_3_t_1.html

Review and practice:
http://www.studyzone.org/mtestprep/math8/e/gcf5l.cfm