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Watson, Silvana Maria R.; Lopes, João; Oliveira, Célia; Judge, Sharon – Journal for Multicultural Education, 2018
Purpose: The purpose of this descriptive study is to investigate why some elementary children have difficulties mastering addition and subtraction calculation tasks. Design/methodology/approach: The researchers have examined error types in addition and subtraction calculation made by 697 Portuguese students in elementary grades. Each student…
Descriptors: Error Patterns, Foreign Countries, Elementary School Students, Mathematics Instruction
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Huang, Tzu-Hua; Liu, Yuan-Chen; Chang, Hsiu-Chen – Educational Technology & Society, 2012
This study developed a computer-assisted mathematical problem-solving system in the form of a network instruction website to help low-achieving second- and third-graders in mathematics with word-based addition and subtraction questions in Taiwan. According to Polya's problem-solving model, the system is designed to guide these low-achievers…
Descriptors: Computer Assisted Instruction, Mathematics, Mathematics Instruction, Mathematics Education