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Factors
 Worsley School Prime Factors Guide with Factor Calculator
 Math Goodies Factor Tree Game
 National Library of Virtual Manipulatives
 Factor Tree – Factor numbers using a tree diagram.
 Sieve of Eratosthenes – Relate number patterns with visual patterns.
 FunSchool Math Popper Game addition, subtraction, multiplication
 APlusMathArithmetic: +*/
 BBC Bitesize Negative Numbers
 HoodaMath
 Multiplication.Com
 Coolmath
 Timernator
 Crazy Taxi M12 This is one of our most fun games. But, you REALLY have to know your times tables to do well. Before each level, I run through my multiples in my head!
 Math Lines This is just like our Marble Lines game, but we've made it an addition game. You have to shoot the ball that makes the right sum.
 Math Lines: Xfactor This is the same as Math Lines, but you need to really know your times tables and higher multiples for this one.
 Arithmetic Game In this timed game, how fast can you pick out numbers from the grid that complete the missing spots in an equation?
 Make 15, Make 24 Compete against the computer to see who can pick numbers that add up to 15 first.
 Math ManThis is a Pac Man type game, but you have to eat the monster that solves the math equation.
 Math Search In this game, you're given an arithmetic problem to solve... Once you find the answer, you have to find it on the grid of numbers  like in a word search game.
 Number BallsThis is a pretty simple game. You just click on the balls following the numbers on them from lowest to highest.
 Number Monster This was the first game I ever made. Really, it's more of a math practice thing than a game. But, it makes practicing a lot more fun.
 Number Twins This is like our game, Twins, but we put numbers on the balls. You have to match up numbers (like in our game Shisen) to make the correct sums.
 Subtraction Blast I've played this game until my arms were sore. It's great arithmetic practice while you get to shoot stuff. Can life get much better than that?
 The Timernator How fast can you do arithmetic? Well, with this game, you can find out! See how many addition, subtraction, multiplication and division problems can you do in a minute?
 National Library of Virtual Manipulatives

Number Line Bounce – Number line addition and subtraction game. Number Puzzles – Solve puzzles involving arranging numbers on a diagram so that they add up to a given value.

 Cowboy Math Addition and Multiplication

Prime Time Overview
(Michigan State University)
Concept with Explanation
Selected Homework from ACE
In Prime Time students will explore certain important properties of whole numbers, especially those related to multiplication and division. The investigations in this unit will help students to:
 Understand relationships among factors, multiples, divisors, and products;
 Recognize and use properties of prime and composite numbers, even and odd numbers, and square numbers;
 Use rectangles to represent the factor pairs of numbers;
 Develop strategies for finding factors and multiples, least common multiples, and greatest common factors;
 Recognize and use the fact that every whole number can be written in exactly one way as a product of prime numbers;
 Use factors and multiples to solve problems and to explain some numerical facts of everyday life; and
 Develop a variety of strategies for solving problems building models, making lists and tables, drawing diagrams, and solving simpler problems.