Put either a "less than" symbol or a "greater than" symbol between the two numbers. You can choose the range (1 - 100, 1 - 1,000 or 1 - 10,000).

http://www.crickweb.co.uk/assets/resources/flash.php?&file=ncmenu

Students have to choose the correct operation to solve each problem, which can involve radius, diameter, circumference and area.

Students can also do an investigation to discover that for any circle, circumference divided by diameter is always about 3.14. Neat activity!

http://illuminations.nctm.org/ActivityDetail.aspx?ID=116

Concentration Memory Game

You can choose to play the game to revise number facts, fraction concepts or fraction-decimal-percent conversions. Very nice implementation!

http://illuminations.nctm.org/ActivityDetail.aspx?ID=73

First choose the front and rear wheels of the bike, and then start pedalling. How far do you go?

http://illuminations.nctm.org/ActivityDetail.aspx?ID=178

The computer randomly chooses 4 digits. Use the four digits and the arithmetic functions - Addition, Subtraction, Multiplication and Division (and also Exponents and Parenthesis) to form the numbers from 1 to 10.

http://www.theproblemsite.com/games/onetoten2.asp

The computer has selected a fraction at random. Your job is to determine the fraction by guessing. The computer will tell you if you are too high or too low. A great way for students to practice ordering fractions.

http://www.theproblemsite.com/games/hilo.asp

Type in one or more words, separated by commas. Google Trends will display line graphs showing the number of searches on those words over the past five months, along with other interesting graphs and statistics.

For example, type: math|maths, coffee (the vertical bar acts like "or"). The data and graphs show that overall more people are searching for maths than for coffee. But not in Washington DC.

Lots of good fun and good maths to be had here.

http://google.com/trends

Each box of Cheerios (a breakfast cereal) contains a prize. There are 6 different prizes. On average, how many boxes of Cheerios do you need to buy to get all 6 different prizes? This web page is a colourful simulation of the problem.

http://www.mathwire.com/data/CerealApplet.html

There is a cool puzzle at the Nrich website called the Factors and Multiples Puzzle, which can be found on-line at http://nrich.maths.org/public/viewer.php?obj_id=5448

I have created a flipchart to support the use of this puzzle in the classroom. Enjoy!

You are shown the actual share price and trading information for an unknown company over a period of time. Use this information to try to choose the best times to buy and sell shares. How did you do over a year? Three thumbs up!

http://chartgame.com/