One hundred four students aged 8 to 16 worked on one Fermi problem involving estimating the number of people that can fit in their school playground. We present a qualitative analysis of the different mathematical models developed by the students. The analysis of the students' written productions is based on the identification of the model of…

Most studies of school bullying in China are atheoretical. To fill the gap in the literature, we introduce criminological theories in an attempt to test propositions broadly derived from these perspectives in the study of physical bullying. Relying on data collected from 12 middle schools (Grades 7 to 9) in three cities with information on both…

The study examined students' perceptions related to emotional and cognitive engagement of linguistic and diagrammatic representational practices in science learning. Altogether, 251 Japanese sixth-grade (11-12 years old) and 187 ninth-grade students (14-15 years old) participated. The students' recognitions were measured by a self-report…

We constructed and calibrated an instrument targeting conceptual and procedural fraction knowledge. We used this instrument in a quantitative study with 126 secondary students (7th and 9th graders), testing the hypothesis that there are individual differences in the way students combine the two types of knowledge. Cluster analysis revealed four…

Researchers often use self-reported instruments to collect data from students when investigating the causes and effects of bullying. When completing the instrument, students may skip items despite anonymous data collection. To interpret data accurately, researchers must identify the causes of nonresponse. This study examined the impact of item…

Many studies have shown a decrease in scientific interest with an increase in age. Since interest is linked to a high degree of deep-level learning, it is of great relevance to foster interest in science. This study investigates interest in biology from 7th, 9th, and 12th grade students in Germany (N=257). Results show a significantly lower…

This study investigates multiple-level antecedents of cyberbullying victimization among early adolescents. Data from the Health Behavior in School-Aged Children, 2009 to 2010 cohort study in the United States were used. The sample included White, Black, Latino, and Asian adolescents, ages 10-14 (N = 8481). Bivariate analysis, logistic regression,…

This study examined age-related changes in friend similarity on delinquency to determine whether deviant behavior homophily peaks during mid-adolescence. A community sample of 1,663 male and 1,826 female Swedish youth from Grade 5 (M = 11.21 years) to Grade 10 (M = 16.25 years) provided self-reports of delinquency. Friendships were identified from…

Background: Uncertainty is a crucial element of scientific knowledge growth. Students should have some understanding of how science knowledge is developed and why scientific conclusions are considered more or less certain than others. A component of the nature of science, it is considered an important aspect of science education and allows…

This study examines developmental change across adolescence in the similarity of friends versus nonfriends. This differential in similarity is a key aspect of the organization of the peer context of development: The stronger the correlation between friends for an attribute, the more the attribute delineates clustering and divisions of friendships.…

Among a sample of 472 Indigenous high school students, juxtaposed with 15,884 non-Indigenous students from the same 54 schools, we investigated variation in motivation and engagement from school to school, and the role of motivation and engagement in predicting various academic outcomes (aspirations, buoyancy, homework completion, and…

Across countries, the age and timing of when children navigate school transition varies, as does provision of support during this challenging time. These two factors can heavily shape young people's adjustment, yet to date there is minimal research which has investigated how this period is navigated in different cultures. The aim of the present…

The present cross-sectional study aimed to (a) expand our understanding of the role of risk and resilience factors for adolescent adjustment during coronavirus disease (COVID-19) and (b) examine personal resilience, peer and teacher-student relationships as protective factors against mental health difficulties. A total of 3,662 students from 4th…

Continual conduct problems from adolescence to adulthood comprise a societal concern. Knowledge of school-related triggers and contributors to persistent conduct problems is important but still limited. We explored the role of schoolwork difficulties and being bullied by peers at school in the development of conduct problems, controlling for…

Student victimization and school violence have been an ongoing cause of national concern, resulting in a concerted effort among educators, administrators, parents, and policymakers to determine the gravity of the issue and consider approaches to crime prevention. This Statistics in Brief presents estimates of student criminal victimization at…