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Avcu, Ramazan – International Journal of Mathematical Education in Science and Technology, 2019
In this study, I analyzed and compared definitions of special quadrilaterals presented in the US and Turkish secondary school mathematics textbooks. To this end, seven textbooks from each country were examined based on the following features of mathematical definitions: form of presentation and mathematical correctness, minimality, the nature of…
Descriptors: Foreign Countries, Textbooks, Textbook Content, Secondary School Mathematics