其他摘要：In this research we look at classification from different points of view: from the first stages of learning, from mathematics and from the teaching of mathematics. The theoretical study carried out in this research provides the structure in which a great variety of situations/problems related to the classification in the world of solids fit in. We present a proposal in order to deal with the classification with teacher training college students. This proposal has been elaborated using results that come from theoretical analysis and experimentation. We analyse the different types of classification considered in this proposal, specifying its main characteristics. Moreover, for some classifications we indicate the geometrical activity which can be developed from them. Furthermore, we add some ans-wers by students that tell us how to handle the elaboration of definitions of concepts and which also tell us about the behaviour of students when they solve some of the activities set when implementing our proposal.
关键词：wers by students that tell us how to handle the elaboration of definitions of concepts and which also tell us about the behaviour of students when they solve some of the activities set when implementing our proposal
