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Related Concept Videos

Molecular Factors Affecting Cell Division01:27

Molecular Factors Affecting Cell Division

Several external and internal factors influence the initiation and inhibition of cell division. For instance, the death of nearby cells or the release of human growth hormone (hGH) promotes cell division. In contrast, lack of hGH or crowding of cells can inhibit cell division.
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Analysis of Multidimensional Microscopy Data Using Cell-ACDC
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Published on: November 7, 2025

A microgenetic study of simple division.

Katherine M Robinson1, Adam K Dubé

  • 1Department of Psychology, Campion College, University of Regina, Regina, Saskatchewan, Canada. katherine.robinson@uregina.ca

Canadian Journal of Experimental Psychology = Revue Canadienne De Psychologie Experimentale
|September 10, 2008
PubMed
Summary
This summary is machine-generated.

Fifth-grade students improved their simple division skills over eight weeks. Strategy use varied, with direct retrieval increasing, supporting the overlapping waves model of cognitive development.

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Area of Science:

  • Cognitive Development
  • Mathematics Education
  • Child Psychology

Background:

  • Understanding the development of mathematical strategies is crucial for effective pedagogy.
  • Previous research suggests strategy use is not linear but evolves over time.

Purpose of the Study:

  • To examine the microgenetic development of simple division strategies in Grade 5 students.
  • To observe strategy changes over an 8-week period.

Main Methods:

  • A microgenetic study design was employed.
  • Grade 5 students (mean age 10 years, 3 months) solved simple division problems weekly for 8 sessions.
  • Strategy use and performance (speed, accuracy) were tracked.

Main Results:

  • Student performance improved, with faster and more accurate responses over time.
  • Direct retrieval strategy use increased significantly.
  • Retrieval of multiplication facts remained steady, while other strategies like addition facts and derived facts decreased.
  • Strategy variability was observed both within and across individual students.

Conclusions:

  • Cognitive development in mathematical strategy use is a dynamic and transitional process.
  • Findings support Siegler's overlapping waves model, indicating development as a constant state of change.
  • Direct retrieval emerged as an increasingly efficient strategy for simple division.