Learning math: still paper and pen Is it, from an educational perspective, still sound advice to recommend people to use  paper/a notebook (of the traditional sort, not the device) and pen/pencil? 
I wonder if computers are a disadvantage since whatever program you use, it will be giving you clues when it comes down to writing math symbols (so, you'll be thinking less). Add to it the fact that most examinations will be without a computer.

I use just about every device known to man to do math: pencil and paper, chalk and white boards, tablet with stylus and computer.  They all have their advantages and disadvantages, but I would have to agree with you that one major disadvantage of any internet-connected device is instant access to immediate help, all the time.  Students - myself included - have gotten into really bad habits when it comes to learning mathematics because of this.  So my vote would be yes: pen, pencil, chalk, dry erase or possibly a tablet (with the WiFi turned off...) is probably the best way to actually learn mathematics.  It's completely different once you start doing research, of course - then a computer with LaTeX and a CAS and the internet becomes absolutely indispensable.  I also use my tablet for reading and annotating papers (which is great). 
I would also agree that at the high school or early college level, a well designed online tutoring/homework system can be good.  But again - it's an internet connected device, and I've had way too many students who do their online homework with Wolfram Alpha open in another tab...so who knows.
