There are many affordable tools for the iPad that can help foster higher-order thinking. For instance, the online reference tool Wolfram Alpha: http://www.wolframalpha.com/ which is a great reference for computable information. Students can easily use this tool to quickly check their computational work with many mathematical and scientific equations which will allow students time for analyzing the meaning of the results.
I'm also very excited about the many mobile computing possibilities apps that are being developed. Have you seen what blackboard has developed--Mobile Learn?
The touch screen technology is now very affordable allowing note taking very much like the expensive tablet laptops. This tool has great potential. I'm intrigued with what the future holds with the iPad technology....