| Přispěvatelé: |
Barbin, E, Jankvist, UT, Hoff Kjeldsen, T, Smestad, B, Tzanakis, C, Bonissoni, P, Cazzola, M, Longoni, P, Riva, G, Rottoli, E, Sorgato, S |
| Popis: |
The reflection on the long persistence of unsatisfactory results, has led us to upset the most common idea of fraction: fraction-of-something. To this, we have: (a) corrected the “primitive intuition” of fraction by constructing an “intuitive representation”, (b) set the familiarization of children with fractions as a goal, and (c) practiced the idea of fraction as megaconcept. In our enquiring we have focused on the Pythagorean statement: the comparison is a logos. This latter is like a modern act of mathematisation of the comparison and it is the starting point of our didactic practice. It has the following features: (a) it is imposed, (b) it is a leap, (c) it is elementary, (d) it is an axios, (e) it has the characteristic of resence/absence along the path towards the megaconcept. |
