TY - GEN digital ID - 131148751 TI - Activity and Sign : Grounding Mathematics Education AU - Hoffmann, Michael H.G. AU - Lenhard, Johannes AU - Seeger, Falk PY - 2005 SN - 9780387242705 PB - Boston, MA Springer Science+Business Media, Inc DB - UniCat KW - Philosophy KW - Didactics of mathematics KW - Pure sciences. Natural sciences (general) KW - wetenschapsgeschiedenis KW - didactiek KW - filosofie KW - wiskunde UR - https://www.unicat.be/uniCat?func=search&query=sysid:131148751 AB - ER -