https://www.edimast.it/index.php/edimast <p>EDiMaST deals with educational research methodology and assessment research in education.</p> Panagiote Ligouras en-US EDiMaST: Experiences of Teaching with Mathematics, Sciences and Technology 2421-7247 https://www.edimast.it/index.php/edimast/article/view/74 <p>In the first half of this article the pedagogical significance of the concept of ‘skills’ is described.</p> <p>The object of this didactic model is to find a balance between the development of the personality of the individual and the ability to capitalize on personal life plans in the context in which they are found.</p> <p>Working towards the development of skills means a teacher must put students in challenging situations, drawn from the real world, in a complex network of situations and relationships. Small centres are the ideal place for planning and the realisation of real situations in which every student is motivated to use their own resources, interior and exterior: knowledge, skills, enthusiasm, tools, and artefacts, and above all, to collaborate with both peers and adults connected to the project.<br>In the second part of the article, good practices for didactics for skills is described, as carried out in an Italian middle school.<br>The methodology used is didactics for projects which is completely in line with didactics for skills: the classes involved are invited to organize a scientific aperitif for the local community, with scientists of international fame. The organization is entrusted entirely to the class project leader but cannot be accomplished without the help of fellow students, local Council administrators, and associations.</p> Paolo Martena Piera Ligori Copyright (c) 2021 Paolo Martena, Piera Ligori https://creativecommons.org/licenses/by/4.0 2021-05-26 2021-05-26 7 1 16 https://www.edimast.it/index.php/edimast/article/view/76 <p>The aim of our research was to study and analyse the possible main reasons of errors in the answers of some INVALSI questions proposed to first and second cycle students on Data and Uncertainty items. Three questions taken from Invalsi tests of different years (2012-2017) were administered. We chose one question referred to Probability and two questions to Statistics.<br>In our research we analysed the errors and also their recurrence, by arguing the possible causes linking them in a vertical perspective.&nbsp;<br>We observed a very diversified situation in the solving strategies and in the types of errors, both among the various school levels and among students in the same years but who attend different type of schools.</p> Stefano Babini Ivan Graziani Copyright (c) 2021 Stefano Babini, Ivan Graziani https://creativecommons.org/licenses/by/4.0 2021-06-30 2021-06-30 7