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Graphing calculators – like the ones used in this seventh grade Dallas classroom – have become ubiquitous in U.S. education. AP Photo/Tony Gutierrez

The rise – and possible fall – of the graphing calculator

Teachers are starting to ditch graphing calculators for math apps. Was the expensive tech ever worth it – or is it just holding students back?
Lightning moves pretty quickly; would you call it instantaneous? Steven Vanderburg, NOAA

What exactly does ‘instantaneous’ mean?

An instant likely feels different to a person, or a redwood, or a gnat. What's infinitely small for one might be a whole lifetime for another – and that scale influences the choices we make.

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