Lasa, Wilhelmi & Belletich, 2014
- Egilea:
- Aitzol Lasa
A plot for Laika
This paper describes a didactical situation to introduce the optimization of areas in Primary Education (age 8-9). The mathematical activity is assisted by two physical instruments: first, paper and pencil; second, dynamic geometry software. Once the mathematical activity on paper exceeds the arithmetical skills of the kids, a dynamic model is used to explore new properties. The design for the didactical situation and the analysis of the results are given in terms of two didactical theories, i.e., the Theory of Didactical Situations in Mathematics and the Onto-semiotic Approach for mathematical knowledge and instruction. The experimental trial on groups age 8-9 and 10-11 strengthens the theoretical approach. In addition, didactical obstacles have been identified.
