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Download full textMoon, Kyunghee – North American Chapter of the International Group for the Psychology of Mathematics Education, 2019
This study investigated preservice secondary mathematics teachers' difficulties with and understanding of graphs of two-variable inequalities with the lens of the APOS theory. The analysis showed that most teachers understood inequality graphs as actions, at best, and used informal rules to construct graphs. They also had difficulty justifying…
Descriptors: Preservice Teachers, Secondary School Teachers, Mathematics Teachers, Knowledge Level
