We thought it would be even more cool, if some day it would be possible to solve integration and differention problems.

I’m sure that some – maybe a lot – will say this is just an old man fighting the progress and unwilling to embrace new achievements within calculator technology.

However, I totally agree with you.

My daughter is attending highschool, and she is using the TI Nspire program. Yes, it can do many wonderful things, so what is wrong?

As you pointed out in your video, the students do not develop the fundamental understanding of math. Math is about applying your logic thinking ablity to determine whether something is true or false. The calculator does not develop this ability.

It is like placing an able person in a wheel chair – if the person has been sitting in the wheel chair for a year or so, he or she will not be able to walk no more.

I have spent many hours sitting with my son and now with my daughter – just with pencil and paper – to learn them to appriciate be beauty of math.

We have had this math discussion in the Danish journal “The engineer”, and a majority shared your (our) views.

BTW, thanks a lot for your lessons – somebody ought to give you a medal!