Investigates the evidence that the imperfect performance in forward search of 36 children aged four and five years resulted from unstable execution of the correct component processes. Evidence suggests that five-year-olds engaged in forward search, but four-year-olds used only a rudimentary form of forward search. (RJC)

A total of 61 children from first through sixth grades participated in four balance-scale and four inclined-plane problem types in a study testing for invariance of subject classifications as rule-users across problems whose products differed but whose type did not. Results indicated that many children's classifications differed across…

Investigated whether fourth-graders' gestures convey knowledge self-recognizable in another context. Identified math problem-solving procedures conveyed gesturally and examined whether the procedures could be accessed by the same child on a task not involving gesture. Children rated higher those solutions derived from procedures they conveyed…