A didactic path for age 5-8 on the concept of extensive quantity using a story as cognitive tool

We present a didactical path for the introduction of the concept of extensive quantity using a story as medium. We assume that stories can be suitable for pupils aged 5-8 as emotional, cognitive and imaginative tools. Teachers can make use of stories as a methodological scaffold, useful to design and lead the activities. The story, together with the experimental activity, can foster children’s verbal production. Moreover we want to give teachers the ability to move from the level of the experimental activity and the pupil’s verbal description of their actions to the level of scientific meaning of the same words/actions. This can be achieved providing teachers with a series of examples of words and phrases that pupils may use, and have to be recognized as indicative of the relevant concept.