A diagnostic analysis of a proportional reasoning test item: An introduction to the properties of a semi-dense item

W. Bart, Thomas R. Post, M. Behr, R. Lesh

Research output: Contribution to journalArticlepeer-review

Original languageEnglish
Pages (from-to)1-11
JournalFocus on Learning Problems in Mathematics
Volume16
StatePublished - 1994

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