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Download full textPerry, Patricia; Camargo, Leonor; Samper, Carmen; Sáenz-Ludlow, Adalira; Molina, Óscar – North American Chapter of the International Group for the Psychology of Mathematics Education, 2014
To interpret in detail the meaning-making in the classroom and the corresponding teacher semiotic mediation, we have resorted to Peirce's triadic ign theory, interpreted by Sáenz-Ludlow and Zellweger. We present an example of the use of a few elements of that theory in the analysis of a classroom episode in which meaning is constructed with the…
Descriptors: Mathematics Instruction, Plane Geometry, Preservice Teachers, Preservice Teacher Education
Direct linkFrederickson, Greg N. – College Mathematics Journal, 2012
How many rods does it take to brace a square in the plane? Once Martin Gardner's network of readers got their hands on it, it turned out to be fewer than Raphael Robinson, who originally posed the problem, thought. And who could have predicted the stunning solutions found subsequently for various generalizations of the problem?
Descriptors: Geometric Concepts, Plane Geometry, Problem Solving, Generalization
