This Angle Geometry Quiz tests your knowledge of a few facts relating to angles. Race against the clock as you prove your skills! Topics covered include the interior angles of triangles and quadrilaterals, angles near parallel lines, lines meeting at a point and others.

 

This is one of two math tricks on this site that let you guess someone's birthday after a sequence of mathematical operations.

 

See how many numbers you can make with just basic arithmetic operations and the four given digits! A great puzzle for stretching the mathematical creativity of young children, and reinforcing their arithmetic skills.

 

Wishing that there were educational arcade games? Well, Mathteroids, the math asteroid game is the next best thing! This is an action-packed asteroid shooter game where you must sharpen your math skills to know which asteroids to shoot! Good for grades four and up.

 

To win this big numbers contest, your kids just need to think of the biggest number they possibly can - bigger than anyone else's! This contest closed on October 20, 2008, but the page shows you how you can organize a min-contest within a class or a school.

 

The Challenging Math Puzzle 8 Game is a great puzzle that will baffle your 10 to 12 year olds, and even your adult friends, for hours! Print as many gamesheets as you like, read the instructions, and then? "If at first you don't succeed..." heh heh!

 

This Checkerboard (or Chessboard) Jigsaw Puzzle will be a great challenge for your primary school kids. Watch them try and try to arrange the pieces until they succeed!

 

In a Cryptarithm puzzle, each digit of an arithmetic sum has been replaced with a letter of the alphabet. The aim of the puzzle is to restore the original sum. These puzzles are sometimes called alphametics or crypt-arithmetics. You can get many more such puzzles from the resources available at www.cryptarithmania.com.

 

The Dot Joining Game is a simple paper-and-pencil game, with many hidden mathematical formulae to discover. You can play this game with your kids, and lead them (I show you how on the page) how to help them unlock its hidden mathematical patterns.

 

The Easter Date Worksheets allow a child to compute the date of Easter Sunday in any year at all, with no math more complex than long division. Alternatively, try younger kids on the simpler versions of the worksheets - fewer calculations, smaller numbers, but they only work in certain centuries.

 

This free "fours" contestclosed on the 20th of October, 2009. The idea was to make as many numbers as possible using the digit '4' (as many times as you like) and the operations plus, minus, divide and times. Soon I'll upload the contest results, and ideas for how you can run a contest like this one in your own classroom.

 

Fizz Buzz is a well-known game. It gives practice identifying multiples of 5 and 7. It's a great math game for kids, and a hilarious ice-breaker for adults too! At the web page you'll find a "fizz-buzziness calculator" that will determine what a player should say for any given number.

 

This Fraction Simplifying Puzzle challenges kids to simplify a collection of fractions and observe which ones can and can not be simplified. There are variants of the puzzle that make it suitable for kids just learning fractions, all the way up to lower high school.

 

In the Magical Calculator Birthday Trick and the "Threes" Math Trick, one child gives a sequence of arithmetic instructions to another, then performs a few simple mental steps on the result. Almost like magic, the other's birthday (or another secret number) appears as the result of the sum! Good for fourth grade kids and up.

 

Mastermind is a classic game of logical deduction. The first player selects a secret code. The second player tries to guess that code. After each guess, the first player gives clues about how well the second player did - how many digits (or pegs or marbles) in the code are correct, and how many are the right color but the wrong place. In this online version of mastermind, you can pit your wits against the task of finding the computer's secret code, or select your own secret code, and challenge the computer to guess it.

 

In the Math Architect Online Game the goal is to design an apartment with the given area. The catch? Each room is a square, and you must have as few rooms as possible! This makes the game challenging enough to keep kids occupied, and deep enough to keep them learning as they play. There is also a high scores table showing the best players each month, year and for all time.

 

This Math Card Game will make your kids actually like practicing their sums!

 

And don't miss my Bubble Breaker Game, Math Frozen Bubble, which needs quick-thinking arithmetic to win!

 

Or play a game of Math Hangman? "Three strikes and you're out" is the rule as kids try to guess the hidden math word or sum! Good for almost any grade level!

 

In the Pizza Cutting Puzzle kids try to cut up a square pizza to make it fit in a round tray. Try to cut as few pieces as possible!

 

Want to play sudoku online? You can at this page. The page also has links to some printable sudoku for kids, and a sudoku solver. If you're a sudoku fan, make sure you visit this page and try out the puzzles it provides. Puzzles can be symmetric, and there are five difficulty levels.

 

Try this Powers puzzle, an exercise where kids explore numbers with their calculator, and try to spot patterns in the numbers they explore.

 

If you want sudokus to print, you can get as many as you need (I really mean that!) from my printable sudoku page. Sure, there's a few sudoku worksheets to download, with about 240 puzzles, but the page also has a printable sudoku generator that will let you print up to 1500 sudokus at a time - as many times as you like! Bookmark the page, and you'll never run out of sudoku puzzles again...

 

This Weekly Puzzle Google Gadget will show you a new math puzzle every week. If you don't want to visit the web page each week, you can put the gadget on your own web page, or on your personalized google start page.

 

There is a famous story about the inventor of chess, who was offered a reward by the emperor of India. He chose a reward that seemed to the emperor very cheap - just a few sacks of rice - but in reality came to more rice than India could produce in a million years. This site has worksheets to help kids work through a Modern Rice-And-Chessboard Story and see for themselves how rich the reward was.

 

Get your kids to try out these Sliding Blocks Puzzles just for the challenge of solving them, or get them thinking about the deeper questions of what makes a sliding block puzzle solvable.

 

Get your kids using this Spirograph Applet, and watch them make beautiful patterns. While they are enjoying the artwork, you can read here about the math they are learning!

 

Squink is a Brain Puzzle where players have to find the squares in a pattern on a grid, and count how many squares surround each location. There are two ways to play - you can count the squares in the pattern shown, or you can find a pattern to produce the counts shown. You can also design patterns of squares and share them with your friends!

 

Why not try the Traffic Jam Game (or the Online Version)? It's a collection of logic puzzles, ranging from simple to challenging. The brightly-colored playing pieces and simple rules will capture your kid's hearts.