Making bad conjectures and incomplete proofs with good drawings within a dynamic geometry environment
Giuseppe Accascina, Enrico Rogora, G. MARGIOTTA · IRIS Research product catalog (Sapienza University of Rome) · 2005
We present some experiments with pre-service and in-service math teachers which show how the use of a good drawing with a dynamical geometry system sometimes "hides" some evident properties and therefore induces to miss some conjectures and to produce "proofs" with bugs.