Semejanzas y diferencias entre las concepciones infantiles y la evolución histórica de las ciencias : el ejemplo del concepto de fuerza y especialmente del de fuerza de gravedad

Resum

This research refers to the evolution of learning the concept of gravity. The previous ideas of the students, aged 12-13, were analysed to be taken into account prior to the methodology design. An imaginary character defending the students' views was introduce to raise polemics. Among other results, we want to outline that the theory of «ímpetus» eventually come out of the students and was coherently formulated.