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pro vyhledávání: '"Amanda L. Cullen"'
Publikováno v:
Mathematics Teacher: Learning and Teaching PK-12. 115:191-201
An unsolved problem gets elementary and middle school students thinking and doing mathematics like mathematicians.
Publikováno v:
Mathematics Teacher: Learning and Teaching PK-12. 113:637-642
In this lesson, third graders were asked how many degrees is a full rotation around a circle. After we gave students time and space to disagree, to make and test conjectures, and to explore, they reasoned about angle as turn and determined a full rot
Autor:
Amanda L. Cullen
Publikováno v:
Mathematics Teacher: Learning and Teaching PK-12. 115:534-535
Autor:
Amanda L. Cullen, Jeffrey E. Barrett
Publikováno v:
Mathematical Thinking and Learning. 22:85-115
In this article, we describe how students structured 2-dimensional space with square and nonsquare units. We employed a cross-sectional design, interviewing 5 students from each of 4 different grad...
Autor:
Rick Anderson, Amanda L. Cullen
Publikováno v:
Mathematics Teacher: Learning and Teaching PK-12. 114:494-495
Evaluation of three interventions teaching area measurement as spatial structuring to young children
Autor:
Douglas W. Van Dine, Amanda L. Cullen, Douglas H. Clements, Jeffrey E. Barrett, Craig J. Cullen, Ron Dolgin, Aaron Hudyma, Julie Sarama, Cheryl L. Eames
Publikováno v:
The Journal of Mathematical Behavior. 50:23-41
We evaluated the effects of three instructional interventions designed to support young children’s understanding of area measurement as a structuring process. Replicating microgenetic procedures we used in previous research with older children to a
Publikováno v:
International Journal of Research in Education and Science. :136-147
In this article, we report on the findings of a study investigating the effects of an intervention designed to provide students in Grades 3–5 with opportunities to work with dynamic and static models of angles in a dynamic geometry environment. We