van Shooten´s Book dbook Demostration

Challeges of Lesson Study in UFRJ Descartes´ Dream with van Schooten -
Using Historical Sources on e-textbook

Reinventing School Mathematics from Different Perspectives
by Masami Isoda and Yumiko Yamamoto Baldin

dbook (stable, 2009.09)
If you have any trouble when you use thel lastest vertion's dbook, please download stable version and use this again.