Assessing fifth grade children's rational number knowledge in a non-verbal application context: the darts game
In: Recherches en didactique des mathématiques, Vol. 7 Issue 3, page 51-74
Construct a sum: a measure of children's understanding of fraction size
In: Journal for research in mathematics education, Vol. 16 Issue 2, page 120-131Estimation and children's concept of rational number size
In: Estimation and mental computation, Vol. 1986, page 103-111Identifying fractions on number lines
In: Journal for research in mathematics education, Vol. 19 Issue 3, page 215-232Order and equivalence of rational numbers: a cognitive analysis
In: Journal for research in mathematics education, Vol. 16 Issue 1, page 18-36Order and equivalence of rational numbers: a clinical teaching experiment
In: Journal for research in mathematics education, Vol. 15 Issue 5, page 323-341On 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, Vol. vol. 2, page 272-2791983Rational number learning aids: transfer from continuous models to discrete models
In: Focus on learning problems in mathematics, Vol. 10 Issue 4, page 1-18Research problems in mathematics education - III
In: For the learning of mathematics, Vol. 4 Issue 3, page 22-23Selected results from the rational number project
In: Proceedings of the Ninth International Conference for the Psychology of Mathematics Education, Vol. vol. 1: Individual contributions, page 342-351