Volume 6 · Number 1 · Pages 112–119

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Consequences of Rejecting Constructivism: “Hold Tight and Pedal Fast”. Commentary on Slezak’s “Radical Constructivism: Epistemology, Education and Dynamite”

Leslie P. Steffe

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Purpose: One of my goals in the paper is to investigate why realists reject radical constructivism (RC) as well as social constructivism (SC) out of hand. I shall do this by means of commenting on Peter Slezak’s critical paper, Radical Constructivism: Epistemology, Education and Dynamite. My other goal is to explore why realists condemn the use of RC and SC in science and mathematics education for no stated reason, again by means of commenting on Slezak’s paper. Method: I restrict my comments to Slezak’s paper and leave it to the reader to judge which, if any, of the reasons that I advance for these two states of affairs are not specific to Slezak’s paper. Other readers might not agree with my interpretations of Slezak’s paper, including Slezak himself, but I offer them after having worked with von Glasersfeld in interdisciplinary research in mathematics education for over 25 years. Findings: My findings are that Slezak: (1) rejects RC and SC on the basis of unjustified criticisms, (2) does not explore basic tenets of RC nor of SC beyond the unjustified criticisms, (3) rejects how SC and RC have been used in science and mathematics education, based at least in part on the unjustified criticisms, (3) dislikes how SC has been used in science and mathematics education, a dislike that fuels his rejection of any constructivism, and (4) doesn’t explore how RC has been used in scientific investigations in mathematics education. On the basis of these findings, I conclude that how epistemological models of knowing might be used in science or mathematics education would be better left to the educators who use them in interdisciplinary work.

Key words: idealism, experiential reality, constraints, interaction, adaptation, first-order models, second-order models, scheme, self-reflexivity


Steffe L. P. (2010) Consequences of rejecting constructivism: “hold tight and pedal fast”. Commentary on slezak’s “radical constructivism: Epistemology, education and dynamite”. Constructivist Foundations 6(1): 112–119. http://constructivist.info/6/1/112

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Confrey J. (1994) Splitting, similarity, and rate of change: A new approach to multiplication and exponential functions. In: Harel G. & Confrey J. (eds.) The development of multiplicative reasoning in the learning of mathematics. State University of New York Press, Albany: 291–330 << Google Scholar

Driver R., Asoko H., Leach J., Mortimer E. & Scott P. (1994) Constructing scientific knowledge in the classroom. Educational Researcher 23(7): 5–12. << Google Scholar

Einstein A. & Infeld L. (1967) The evolution of physics. Simon & Schuster, New York. Originally published in 1938. << Google Scholar

Glasersfeld E. von (1980) The concept of equilibration in a constructivist theory of knowledge. In: Benseler F., Hejl P. M. & Köck W. K. (eds.) Autopoiesis, communication, and society. Campus, Frankfurt: 75–85. << Google Scholar

Glasersfeld E. von (1982) An interpretation of Piaget’s constructivism. Revue Internationale de Philosophie 36(4): 612–635. Available at http://www.vonglasersfeld.com/077

Glasersfeld E. von (1984) An introduction to radical constructivism. In: Watzlawick P. (ed.) The invented reality. Norton, New York: 17–40. Available at http://www.vonglasersfeld.com/070.1

Glasersfeld E. von (1991) Abstraction, re-presentation, and reflection: An interpretation of experience and of Piaget’s approach. In: Steffe L. P. (ed.) Epistemological foundations of mathematical experience. Springer, New York: 45–67. Available at http://www.vonglasersfeld.com/130

Glasersfeld E. von (1995) A constructivist approach to teaching. In: Steffe L. P. & Gale J. (eds.) Constructivism in education. Lawrence Erlbaum, Hillsdale NJ. << Google Scholar

Glasersfeld E. von (1997) Homage to Jean Piaget (1896–1982) Irish Journal of Psychology 18(2): 293–306. << Google Scholar

Glasersfeld E. von (2001) The radical constructivist view of science. Foundations of Science 6 (1–3): 31–43. Available at http://www.univie.ac.at/constructivism/pub/fos/pdf/glasersfeld.pdf

Hackenberg A. (2010) Students’ reasoning with reversible multiplicative relationships. Cognition and Instruction 28(4): 383–432. << Google Scholar

Piaget J. (1976) Le comportement, moteur de l’évolution. Gallimard, Paris. << Google Scholar

Piaget J. (1977) Foreword. In: Bringuier J.-C., Conversations libres avec Jean Piaget. Éditions Laffont, Paris. << Google Scholar

Piattelli-Palmarini M. (1980) How hard is the “hard core” of a scientific program? In: Piattelli-Palmarini M. (ed.) Language and learning: The debate between Jean Piaget and Noam Chomsky. Harvard University Press, Cambridge MA: 1–20. << Google Scholar

Slezak P. (2010) Radical constructivism: Epistemology, education and dynamite. Constructivist Foundations 6(1): 102–111. Available at http://www.univie.ac.at/constructivism/journal/6/1/102.slezak

Steffe L. P. & Cobb P. (1988) Construction of arithmetical meanings and strategies. Springer, New York. << Google Scholar

Steffe L. P. & Olive J. (2010) Children’s fractional knowledge. Springer, New York. << Google Scholar

Steffe L. P. & Thompson P. W. (2000) Interaction or intersubjectivity? A reply to Lerman. Journal for Research in Mathematics Education 31(2): 191–209. << Google Scholar

Steffe L. P. & Thompson P. W. (2000) Teaching experiment methodology: Underlying principles and essential elements. In: Lesh R. & Kelly A. E. (eds.) Research design in mathematics and science education. Lawrence Erlbaum, Hillsdale NJ: 267–307. << Google Scholar

Steffe L. P., von Glasersfeld E., Richards J. & Cobb P. (1983) Children’s counting types: Philosophy, theory, and application. Praeger Scientific, New York. << Google Scholar

Thompson P. W. (1994) Concepts of speed and rate. In: Confrey J. & Harel G. (eds.) The development of multiplicative reasoning in the learning of mathematics. State University of New York Press, Albany: 179–234. << Google Scholar

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