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In this paper we will show ways of confronting typical errors related to the concept of the inflection point using digital tools (e.g., video, Geogebra applets, interactive questionnaires, etc.). We will demonstrate how a specific digital tool can be used to design a teaching unit that allows teachers to confront errors. The teaching unit includes the tool itself, the investigative assignment based...
We propose an approach to the integral concept for advanced high school students and provide evidence for the potential of this approach to support students in acquiring an in-depth proceptual view of the integral. The approach is based on the mathematical idea of accumulation. A ten-lesson unit has been implemented with four pairs of students. The students’ learning processes were micro-analysed...
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