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These inexpensive little Home button covers (4 for US$5) hide the iPad or iPhone Home button to keep your kids from switching to another app and doing something fun like deleting all of your contacts or calling your boss. Apparently, a lot of parents need and use BubCaps, as they topped the reader voting in our TUAW Best of 2011 iPad accessory category.

But the benefits of having iPads in the classroom don't come free. Teachers say you have to invest time into the technology in order to get something out of it, which means much of the iPad's usefulness will depend on the applications both teachers and publishers discover as adoption grows.

Four Ways Technology Will Change Our Lives In The Future Technology experts Mike McSherry, CEO of Swype, and Bill Buxton make their predictions for where technology will go next.

1. Gesture Technology