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Download full textWatson, Jane M.; Nathan, Erica L. – Mathematics Education Research Group of Australasia, 2010
As part of an interview protocol investigating teachers' pedagogical content knowledge (PCK) in statistics, 40 teachers were presented with a newspaper article reporting a phone-in survey about the legalisation of marijuana. The article and a question about the reliability of the sample had earlier been used in student surveys, and three student…
Descriptors: Mathematics Education, Student Surveys, Foreign Countries, Pedagogical Content Knowledge
Peer reviewed
Direct linkUnger, Jennifer B.; Gallaher, Peggy; Palmer, Paula H.; Baezconde-Garbanati, Lourdes; Trinidad, Dennis R.; Cen, Steven; Johnson, C. Anderson – Evaluation Review, 2004
Schools offer a convenient setting for research on adolescents. However, obtaining active written parental consent is difficult. In a 6th-grade smoking study, students were recruited with two consent procedures: active consent (parents must provide written consent for their children to participate) and implied consent (children may participate…
Descriptors: Ethics, Sampling, Grade 6, Early Adolescents
