Development of a resource for the teaching of chemical formulas and its appropriation by teachers

Sophie Canac (1) , Isabelle Kermen (1)

1 LDAR (EA_4434) - Laboratoire de Didactique André Revuz

Teaching the symbolic language, the concepts of submicroscopic and macroscopic models, of the empirical register should be done in a dialectical way to encourage the students to make links between the different registers and levels. The symbolic language acts as a bridge between macroscopic and submicroscopic levels. Relying on the history of chemistry makes it possible to highlight the reasons that have led to current chemical formulas. Therefore, we designed a resource based on the controversies in the history of chemistry. We followed a method close to that of the Model of Educational Reconstruction to develop a resource on the introduction of chemical formulas for grade 8 students in France. The resource was proposed to four teachers and implemented by two of them. The principal steps and results of the process are presented.

Mots clés: chemistry; symbolic language; teaching material development

Domaines: Education; Chimie

Sophie Canac, Isabelle Kermen. Development of a resource for the teaching of chemical formulas and its appropriation by teachers. 13th ESERA conference, Aug 2019, Bologna, Italy. ⟨hal-02883138⟩