
ERIC Number: EJ068646
Record Type: CIJE
Publication Date: 1972
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Structural Variables That Determine Problem-Solving Difficulty in Computer Assisted Instruction
Loftus, Elizabeth F.; Suppes, Patrick
Journal of Educational Psychology, 63, 6, 531-42, Dec 72
Analysis showed that a word problem is difficult to solve if: it is of a different type from the problem that preceded it; its solution requires a large number of different operations; its surface structure is complex; it has a large number of words; or it requires a conversion of units. (Authors)
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