BFTP: The $3400 piece of chalk

I once walked by a classroom where the teacher was demonstrating how to solve an algebraic equation by writing it out and talking through the steps.

On a piece of paper with a pen.

• Under a $500 document camera
• Connected to an $800 computer
• Wired to a mounted $900 projector
• Displayed on a $1200 interactive white board.

If my math skills are right, that teacher was using $3400 worth of technology to do what could have been done using a piece of chalk on an existing chalkboard.

And should each of his 30 kids have had a $300 device in hand taking notes? Would this have been a $9000 solution to a spiral ring notebook and a pencil?

So what's the moral of the story, technophiles?

Orignal post 2/11/15