Problem solving and mathematical argumentation

Abstract

Problem solving and argumentation are key-competencies in education. The mathematical education at school should give a strong contribution to the development of these competences. The promotion of problem solving and argumentation in mathematics is shared by several international standards. In this contribution, we will describe a project on problem solving and argumentation in primary and middle school, and we will underline that students’ argumentation in mathematical context is an important interpretative tool for teachers.