Edited by the GDM: Gesellschaft fuer Didaktik der Mathematik (Society for Mathematics Education)
This is a series of high quality contributions which is
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Selected Papers from the Annual Conference of Didactics of Mathematics
Since 1967 there has been an annual meeting of German speaking researchers working in the field of mathematics education. The contributions are published in a book (Beitraege zum Mathematikunterricht). As German is not easily understood in the worldwide scientific community the GDM has decided to publish a selection of high quality contributions in English. For this purpose an editorial board has been established which has done the selection.
As the new technologies are gaining more and more importance, the GDM has decided to take the pioneer step to use www-technology so that these virtual books are available worldwide.