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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
Peer reviewedDe Corte, Erik; Verschaffel, Lieven – Journal for Research in Mathematics Education, 1987
Data were collected in the problem representations and solution strategies of 30 first graders who were given a series of simple addition and subtraction word problems. The children were interviewed three times during the school year. The influence of problem structure on children's solution strategies appears more extensive and decisive than that…
Descriptors: Addition, Elementary Education, Elementary School Mathematics, Grade 1
