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I know it is not wise to formulate an opinion on the basis of a one-day
impression. But I have a desire to share these reflections. What do you
think about graphic calculators? How many of you use them in the CBL
activities? I also was motivated by the prospect of taking students
outside for data gathering. But I may change my mind. The learning curve
is so steep. And climbing it is so unpleasant. The MBL activities are much
more attractive in that respect. Yes, sophisticated calculators are less
expensive than computers. But are they worth using? What evidence is
available that teaching high school mathematics with them is more
productive than teaching it traditionally?
Ludwik Kowalski