Hi do you know a good introduction about mathematical thinking using opensource software like Sage math and/or geogebra ?
I found http://abstract.ups.edu/download/aata-20170805-sage-8.0.pdf but I think it's a little bit overwhelming ...do you know something else ?
Thanks ;)
There is a nice book that a team of authors wrote and released under Creative Commons license, first in French, and now translated to English and to German.