Dear colleague, this is a brief reminder of the call for chapter proposals for the upcoming book: "Model-centered Learning with GeoGebra: Theory and Practice in Mathematics Education", http://www.geogebra.org/IGI/ggb-book.html. If you wish to write a chapter, please submit your chapter prospectus and/or notify the editors Lingguo Bu (lb04@xxxxxxx) and Robert C. Schoen (robschoen0307@xxxxxxxxx) of your intent to submit a prospectus at your earliest convenience. Thank you! Best regards, Markus -- Markus Hohenwarter, PhD Learning Systems Institute, Florida State University FCR-STEM: http://www.fcrstem.org GeoGebra: http://www.geogebra.org