Our paper presents an in-service primary school teachers' training program which is based on the idea that the history of science can play a vital role in promoting the learning of physics. This training program has been developed in the context of Comenius 2.1 which is a European Union program. This program that we have developed in the University of Athens is based on socioconstructivist and sociocultural learning principles with the intention of helping teachers to appropriate the basic knowledge on the issue of falling bodies. Moreover, it has the aim to make explicit through the exploitation of authentic historical science events, on the above topic (Aristotle's, Galileo's and Newton's theories on falling bodies) the Nature of Science (NoS), the Nature of Learning (NoL) and the Nature of Teaching (NoT). During the implementation of the program we have used a variety of teaching strategies (e.g. group work, making of posters, making of concept maps, simulations) that utilize historical scientific materials on the issue of falling bodies.