I have a keen interest in using laptops in the mathematics classroom and spent a year researching the topic for the honours thesis component of my Master of Teaching degree. An article based on the work is in preparation for (hopefully) publication in a peer-review journal.
Here are some recent posts from this blog on the topic
Is it real maths?
Who is holding the mouse?
One-to-one laptop programs: the essential ingredients
So what is happening with laptops in maths classrooms?
Why is maths different when it comes to laptops?
Am I being too negative about you-know-what?