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Direct linkVan Dooren, Wim; Vamvakoussi, Xenia; Verschaffel, Lieven – UNESCO International Bureau of Education, 2018
Proportionality can be considered among the most important mathematical notions in the middle school math curriculum (grades 5 to 8). It is the capstone of elementary arithmetic, number, and measurement concepts, and at the same time one of the most elementary understandings one needs for more advanced mathematics. Understanding proportionality is…
Descriptors: Logical Thinking, Middle School Mathematics, Mathematics Instruction, Educational Practices
