Multiples and Factors
Factors
Video
http://www.learnalberta.ca/content/me5l/html/Math5.html
Games
Factors Game #3
http://illuminations.nctm.org/Activity.aspx?id=4134
http://www.math-play.com/Factors-Millionaire/Factors-Millionaire.html
http://www.hoodamath.com/games/factorfeeder.html
Factor Trees
http://studyjams.scholastic.com/studyjams/jams/math/multiplication-division/prime-factorization.htm
http://www.mathplayground.com/factortrees.html
Prime and Composite Numbers
http://www.sheppardsoftware.com/mathgames/numbers/fruit_shoot_prime.htm
http://www.sheppardsoftware.com/mathgames/monkeydrive/numbers/MDPrimeNumbers.htm
Multiples
Video
http://studyjams.scholastic.com/studyjams/jams/math/multiplication-division/multiples.htm
http://www.learnalberta.ca/content/me5l/html/math5.html?goLesson=2
Practice
http://www.teacherled.com/resources/LCM/LCMload.html
Games
http://www.mathplayground.com/multiples.html
http://www.sheppardsoftware.com/mathgames/multiple/multiple_frenzy.htm
http://www.coolmath-games.com/0-crazy-taxi-m12
Least Common Multiple
http://www.fun4thebrain.com/beyondfacts/lcmsnowball.html
Factors and Multiples Games
http://www.topmarks.co.uk/Flash.aspx?a=activity02
http://www.math-play.com/Factors-and-Multiples-Jeopardy/Factors-and-Multiples-Jeopardy.html