Bullying is a peer relational problem that can inflict psychological harm onto both those who are victimized and those who witness it occur. Fostering a positive classroom environment is an important protective factor in preventing bullying. Authoritative classroom climates may protect victimized and bystander youth from negative mental health…

This study explores the relationship between the time children spend outdoors with critical social and health factors. We use questionnaire data from the 2017-2018 Health Behaviour in School-aged Children (HBSC) study in Iceland, focused on children in the 6th, 8th, and 10th grades. All Icelandic schools with pupils in these classes were invited…

Drawing on cross-cultural qualitative research in comprehensive (primary and middle) schools in Finland and Korea, this article explores students' peer relationships as well as tensions and negotiations that occur between student agency and school control. Based on school observations and interviews with students and teachers, this article…

Mathematics related affect turn from positive to negative during comprehensive school years worldwide. There is a clear need to find solutions to the problem. However, some gaps and problems appear in the methodologies and the common approaches used in the field. This article discusses five studies addressing affective development, challenges some…

Following a sociocultural perspective, this study investigates how students who have grown up using the SI (Systeme International d'Unites) (metric) or US customary (USC) systems of units for everyday use differ in their knowledge of scale and measurement. Student groups were similar in terms of socioeconomic status, curriculum, native language…

The International Commission on the Teaching of Mathematics created by the International Congress of Mathematics at Rome, Italy, in 1908, submitted a large body of reports to the congress at Cambridge, England, in 1912. Those for the United States have been published as bulletins for the Bureau of Education. The material in this bulletin shows…