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2

Assessing fifth grade children's rational number knowledge in a non-verbal application context: the darts game
In: Recherches en didactique des mathématiques, Jg. 7 H. 3, S. 51-741986

Construct a sum: a measure of children's understanding of fraction size
In: Journal for research in mathematics education, Jg. 16 H. 2, S. 120-1311985
Identifying fractions on number lines
In: Journal for research in mathematics education, Jg. 19 H. 3, S. 215-2321988



Order and equivalence of rational numbers: a cognitive analysis
In: Journal for research in mathematics education, Jg. 16 H. 1, S. 18-361985
Order and equivalence of rational numbers: a clinical teaching experiment
In: Journal for research in mathematics education, Jg. 15 H. 5, S. 323-3411984
On children's quantitative concept of rational number: construct and estimate the sum
In: Proceedings of the fifth annual meeting: Montréal Sept. 29 - Oct. 1, 1983 = actes de la cinquième rencontre annuelle / PME-NA, North American Chapter of the International Group for the Psychology of Mathematics Education, Jg. vol. 2, S. 272-2791983
Inconsistent student behavior in applicational situations of mathematics
In: Proceedings of the Ninth International Conference for the Psychology of Mathematics Education, Jg. vol. 1: Individual contributions, S. 362-3681985

Research problems in mathematics education - III
In: For the learning of mathematics, Jg. 4 H. 3, S. 22-231984
The role of technology in the cognitive development of mathematics learners
In: The journal of mathematical behavior, Jg. 5 H. 2, S. 209-2321986
Selected results from the rational number project
In: Proceedings of the Ninth International Conference for the Psychology of Mathematics Education, Jg. vol. 1: Individual contributions, S. 342-3511985
Skill automaticity in mathematics instruction: a response to Gagné
In: Journal for research in mathematics education, Jg. 14 H. 3, S. 204-2091983


Two modes of thinking - also relevant for the learning of mathematics?
In: For the learning of mathematics, Jg. 2 H. 2, S. 38-451981
