Sequência de atividades didáticas utilizando espirógrafo

Abstract

This text presents a sequence of teaching activities to be performed with basic education students, with the objective of exploring the working of a toy called spirograph. The mathematical subjects utilized and explored are elementary (proportionality, least common multiple and greatest common divisor) and the sequence aims to provide to the students a guided discovery, based on observations of phenomena, and concluded with a transformational proof.