Maria's Math news - a FREE math newsletter for parents and teachers

May 2013

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Latest from my blog
This is where you'll find the latest happenings, news, & ideas in math teaching

Math teaching videos
My videos at YouTube show you how to teach concepts.
How to help students with multiplication tables?

Factoring and number theory games and resources online

Factoring

Arrays and factors
Drag rectangles to show the factorizations of a given number.
wwwshodor.org/interactivate/activities/factors2/index.html.

Factor Game
A fun, interactive game where you practice divisibility among numbers 1-100. You can play against the computer or against a friend.
illuminations.nctm.org/ActivityDetail.aspx?ID=12

Factor Feeder
Eat factors of the given number, and avoid numbers that are not factors of the given number in this Pacman-style game. Use Arrow Keys to move.
hoodamath.com/games/factorfeeder.php

Sliding Tile Factorization Game
Slide a number over another to capture it, if it is a factor of the other. Number 1 is only supposed to be used to capture a prime number.
www.visualmathlearning.com/Games/sliding_factors.html

Octopus Factors
Move counters up the legs of an octopus but only when the number on the circle is a multiple of the number on the card.
www.counton.org/games/map-numbers/octopus/

Factors Millionaire Game
A millionaire game where the questions have to do with factors, prime numbers, and the greatest common factor.
www.math-play.com/Factors-Millionaire/Factors-Millionaire.html

Not a Factor
Choose a number that is NOT a factor of the given number.
www.helpingwithmath.com/resources/games/target_factors01/not_factor.html

Factors and Remainders
An interactive animation demonstrating factors and remainders. Choose a number and its possibe divisor. The animation shows boxes (as given by the number) arranged into rows of (possible divisor), and you can SEE if there is any remainder.
www.absorblearning.com/media/item.action?quick=ml

Factorization Forest
For each number you factorize, you'll get to grow a tree in your forest! You can choose between 6 different trees, also.
mrnussbaum.com/forest/

Factor Trees at Math Playground
Factor numbers to their prime factors using an interactive factor tree, or find the GCF and LCM of numbers.
www.mathplayground.com/factortrees.html

MathGoodies Interactive Factor Tree Game
Type in a missing number to the factor tree, and the program will find the other factor, and continue drawing the tree as needed.
www.mathgoodies.com/factors/prime_factors.html

Snake
Eat factors, multiples, and prime numbers in this remake of the classic game.
www.pompuzzle.com/Snake

Math Mammoth Multiplication & Division 3 A self-teaching worktext for 5th grade that covers multi-digit multiplication, long division, problem solving, simple equations, ratios, divisibility, and factoring. Available as an affordable download ($4.50), and also as a printed copy. => Learn more and see the free samples! See more topical Math Mammoth books

Product game
For two players; each selects a factor, computer colors the product - who gets four in row wins.
illuminations.nctm.org/ActivityDetail.aspx?ID=29

Primes, Factors and Divisibility—Explorer at CountOn.org
Lessons explaining divisibility tests, primes, and factors.
www.counton.org/explorer/primes

So-Soo-Yoo®
A fun board game that helps children practice factors, factoring, and multiplication at the same time. Price $34.
teruen.com

Unique Prime Factorization
A video explaining the fundamental theorem of arithmetic: that each composite number has a unique prime factorization.
http://www.youtube.com/user/ArtOfTheProblem?#p/u/2/5kl28hmhin0

Prime Number Calculator
This calculator tests if a number is a prime, and tells you its smallest divisor if it is not prime.
www.basic-mathematics.com/prime-number-calculator.html

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