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Download full textDimmel, Justin K.; Pandiscio, Eric A.; Bock, Camden; Reedman, Emma – North American Chapter of the International Group for the Psychology of Mathematics Education, 2021
We report the design of an analog technology, what we refer to as a SunRule, that uses sunlight to model multiplication. Physical models that explore multiplication are fixtures in elementary mathematics classrooms. Our interest in physical models of multiplication was driven by an overarching design problem: How could a physical tool realize a…
Descriptors: Geometry, Mathematics Instruction, Multiplication, Light
Aparicio Landa, Eddie; Sosa Moguel, Landy; Cabañas-Sánchez, Guadalupe – International Journal of Education in Mathematics, Science and Technology, 2021
This article examines the development of professional knowledge in pre-service mathematics teachers. From the discussion of a task associated with the multiplication of consecutive integer numbers, generalization is recognized as a process that allows to explore, to explain, and to validate mathematical results, and as an essential ability to…
Descriptors: Mathematical Concepts, Mathematics Instruction, Geometry, Algebra
Direct linkCaglayan, Gunhan – Computers in the Schools, 2016
This qualitative research, drawing on the theoretical frameworks by Even (1990, 1993) and Sfard (2007), investigated five high school mathematics teachers' geometric interpretations of complex number multiplication along with the roots of unity. The main finding was that mathematics teachers constructed the modulus, the argument, and the conjugate…
Descriptors: Geometry, Mathematics Teachers, Visualization, Numbers
