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- W2287491922 abstract "Research has not identified a general hierarchy of difficulty for calculations performed mentally. This study aimed to provide baseline data about students’ mental computation competence across grades 3 to 10. Rasch modelling techniques were used to develop a scale of mental computation competence, based on 1452 students’ responses to 238 mental computation items organised into overlapping tests. Eight levels of competence were identified. Grade based scales were also developed for grades 3 to 8. These suggested possible curriculum effects since particular items behaved differently across the grades." @default.
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- W2287491922 date "2001-01-01" @default.
- W2287491922 modified "2023-09-28" @default.
- W2287491922 title "A Developmental Scale of Mental Computation" @default.
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