Karin Landtblom - Stockholm University

My name is Karin Landtblom and I work as a senior lecturer at the Department of Teaching and Learning at Stockholm University, Sweden. I started my teaching career in 1987 teaching mathematics and science in school years 7–9 (students aged 12–16). Since 2000 I have taught mathematics education at Teacher Education in Stockholm. I took a master's in mathematics education in 2012. The title was: How students act and communicate when using ICT in mathematical activities. A multimodal study performed in school year 9. The mathematical content in this study was functions, in particular the straight line. 2015 my application to study at a PhD level was accepted. I have had the possibility to study 50% of my service, and I graduated 2023. The title of my thesis is: Mean, median, and mode in school years 4–6: A study about aspects of statistical literacy. Link to the kappa of the thesis➶.

Opportunities to Learn Mean, Median, and Mode Afforded by Textbook Tasks

This research paper examines tasks related to mean, median, and mode in seven Swedish textbook series for students aged between 10–13. The tasks were analysed based on context, mathematical properties, input and output objects, and transformations. These categories allow for a thorough analysis of the opportunities afforded to students to understand these measures. The analysis revealed that most tasks focus on the mean and on procedural transformations with quantitative values. Our findings suggest that the textbooks do not afford enough explicit context for students to develop a deep understanding of the mathematical properties of different measures of central tendency. By analysing various textbooks, we can gain a broader understanding of the learning opportunities afforded to students. We discuss the implications of these results for task design.