Hundred square

Here is another gem - an interactive hundred square with many great options. Go to http://www.crickweb.co.uk/assets/resources/flash.php?&file=100square At the top of the square are all the different buttons.
The i is the information page that explains everything. The c clears all the numbers that have been 'hidden'. The t toggles all the hiders so that all the 'hidden' numbers are now revealed and all the other numbers are now 'hidden'. The number on the top right of the square is the increment number e.g. if you increase it to 2 the numbers in the square will count in two's, if it says 3 the numbers in the square will count in threes etc.
You can alter the starting number of the square by clicking on the arrows on the top left of the square.
To hide a number, click on the blue or green bar at the top of the number. To 'unhide' click again. A pattern of numbers can be created by clicking on the coloured bars at the bottom of each number e.g. a pattern can be created where all the numbers are red, while another pattern can be created using green or yellow.
Please try it out - it really is user friendly!