Teaching math using interactive white boards

This interview with a recent convert to teaching math using interactive white boards includes a lot of good ideas for using the computer display but  leaves me wondering what the IWB adds over what could be done with a tablet PC and projector.

One weakness of the WB is that it forces the presenter to face away from the audience for writing – something we are all used to and try to mitigate, but which could be avoided with the old style projector.

A possibly distinctive use of the IWB might be to have students come up and interact with it themselves, but the interviewee actually seemed to be saying that she tried that but found the benefits outweighed by the distraction of having people moving about so much.

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