@inproceedings{cerulli:hal-00190307, TITLE = {{Building theories: working in a microworld and writing the mathematical notebook}}, AUTHOR = {Cerulli, Michele and Mariotti, Maria Alessandra}, URL = {https://telearn.hal.science/hal-00190307}, BOOKTITLE = {{2003 Joint Meeting of PME and PMENA}}, ADDRESS = {Honolulu, United States}, EDITOR = {Neil A. Pateman and Barbara J. Dougherty and Joseph Zilliox}, PAGES = {Vol. II, pp. 181-188}, YEAR = {2003}, KEYWORDS = {semiotics ; semiotic mediation ; information and communication technologies (ICT) ; learning environments ; formal reasoning ; computer based learning environments ; formal algebra ; CABRI ; geometry theories ; algebra theories ; theoretical thinkings ; notebooks ; theory of instruments of semiotic mediation ; technology enhanced learning (TEL) ; instruments ; instruments of semiotic mediation ; class discussions ; mathematical class discussion ; mathematical discussions}, PDF = {https://telearn.hal.science/hal-00190307/file/Michele-Cerulli-2003.pdf}, HAL_ID = {hal-00190307}, HAL_VERSION = {v1}, }