July 2008, Vol. 39, Issue 4
Josh's Operational Conjectures: Abductions of a Splitting Operation and the Construction of New Fractional Schemes
Anderson Norton
This article reports on students' learning through conjecturing, by drawing on a semester-long teaching experiment with 6 sixth-grade students. It focuses on 1 of the students, Josh, who developed especially powerful ways of operating over the course of the teaching experiment. Through a fine-grained analysis of Josh's actions, this article integrates Piaget's scheme theory (1950/2001) and Peirce's logic of abduction (1998) into a new theory about conjecturing that explains Josh's learning.
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