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Robinson, Katherine M.; Arbuthnott, Katherine D.; Rose, Danica; McCarron, Michelle C.; Globa, Carin A.; Phonexay, Sylvia D. – Journal of Experimental Child Psychology, 2006
Age-related changes in children's performance on simple division problems (e.g., 6 divided by 2, 72 divided by 9) were investigated by asking children in Grades 4 through 7 to solve 32 simple division problems. Differences in performance were found across grade, with younger children performing more slowly and less accurately than older children.…
Descriptors: Intermediate Grades, Grade 4, Grade 5, Grade 6
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Koellner-Clark, Karen; Lesh, Richard – School Science and Mathematics, 2003
This paper describes a proportional reasoning problem set within a real-life context and a complete analysis of one small group discussion of this problem over the course of a 90-minute block. The seventh-grade students' discourse is described to provide insights into typical mathematical interpretations of this problem, as well as some…
Descriptors: Group Discussion, Problem Sets, Mathematical Concepts, Mathematical Logic
McCreery, Louis – 1989
This monograph provides activities for beginning algebra students to develop an understanding of the meaning and use of letter symbols, to show applications of algebra in their own lives, and to develop an understanding of mathematical processes through investigation. The activities included were developed by considering the students' mathematical…
Descriptors: Algebra, Grade 7, Grade 8, Instructional Materials