TY  - GEN
AU  - Hoffmann,Michael H.G.
AU  - Lenhard,Johannes
AU  - Seeger,Falk
TI  - Activity and Sign: Grounding Mathematics Education
SN  - 9780387242705
PY  - 2005///
CY  - Boston, MA
PB  - Springer Science+Business Media, Inc.
KW  - Education
KW  - Science
KW  - History
KW  - Mathematics
KW  - History of Science
KW  - Philosophy
KW  - Μαθηματικά
KW  - Σπουδή και διδασκαλία
UR  - http://dx.doi.org/10.1007/b105055
ER  -