An experimental study on the misunderstanding of velocity by university students and the effect of remedial activity based on the model of conceptual change

The results obtained in two experimental studies performed during two academic years at the Science Faculty of Bari University (Southern Italy) are reported. In these two investigations the aims were: (i) to probe the students' understanding of the concept of velocity and to detect the reasoning adopted in solving the written problems proposed; (ii) to investigate the effect of the nature of the problems on the student samples (freshmen or...