I recently read this interesting blog post - from the Sine of the times blog - that explored how you can use tools such as The Geometer's Sketchpad to explore real-world measurement. Have a look at the post - The key to everything around you is right in your pocket - and tell me what you think.
Have you used this particular tool? Can you recommend another way technology enhances the way your students engage with Maths?
I haven't used the particular tool you're talking about Karen but Software for Learning has a whole category dedicated to software supporting the teaching of Mathematics across the age phases.
There are two in particular I really like:
Thanks for that, Tessa - looks interesting:-)
There have also been a couple of discussions recently in the MLE Reference group on technologies that can support maths:
I got shown this great website in the weekend, Hooda Math by an 11year old.
There are maths games (computer, android and smartphones), tutorials, maths movies for various aged students as well as learning tools and whitebaord games for teachers