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Assessing fifth grade children's rational number knowledge in a non-verbal application context: the darts game
Wachsmuth, Ipke ; Bright, George W. ; Behr, Merlyn J. ; Post, Thomas R.In: Recherches en didactique des mathématiques, Vol. 7 Issue 3, page 51-741986Bericht von der 1985er PME-Tagung
Wachsmuth, IpkeIn: Zentralblatt für Didaktik der Mathematik, Vol. 18 Issue 2, page 69-711986Children's perception of ratios and fractions in Grade 5
Wachsmuth, Ipke ; Behr, Merlyn J. ; Post, Thomas R. ; Hershkowitz, Rina (Ed.)1983Construct a sum: a measure of children's understanding of fraction size
Behr, Merlyn J. ; Wachsmuth, Ipke ; Post, Thomas R.In: Journal for research in mathematics education, Vol. 16 Issue 2, page 120-1311985Identifying fractions on number lines
Bright, George W. ; Behr, Merlyn J. ; Post, Thomas R. ; Wachsmuth, IpkeIn: Journal for research in mathematics education, Vol. 19 Issue 3, page 215-2321988Kalküle, Spiele und Lernen
Wachsmuth, IpkeIn: Der Mathematikunterricht, Vol. 28 Issue 6, page 6-171982Letter to the editor of JMB
Wachsmuth, IpkeIn: The Journal of Mathematical Behavior, Vol. 3 Issue 2, page 188-1921982Number line representations of fractions
Behr, Merlyn J. ; Bright, George W. ; Wachsmuth, Ipke ; Wagner, Sigrid (Ed.)1982Order and equivalence of rational numbers: a cognitive analysis
Post, Thomas R. ; Wachsmuth, Ipke ; Lesh, Richard ; Behr, Merlyn J.In: Journal for research in mathematics education, Vol. 16 Issue 1, page 18-361985Order and equivalence of rational numbers: a clinical teaching experiment
Behr, Merlyn J. ; Wachsmuth, Ipke ; Post, Thomas R. ; Lesh, RichardIn: Journal for research in mathematics education, Vol. 15 Issue 5, page 323-3411984On children's quantitative concept of rational number: construct and estimate the sum
Behr, Merlyn J. ; Wachsmuth, Ipke ; Post, Thomas R. ; Bergeron, Jacques C. (Ed.) ; Herscovic, Nicolas (Ed.)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 272-2791983Inconsistent student behavior in applicational situations of mathematics
Wachsmuth, Ipke ; Streefland, Leen (Ed.)In: Proceedings of the Ninth International Conference for the Psychology of Mathematics Education, Vol. vol. 1: Individual contributions, page 362-3681985Questions on some issues in the psychology of mathematics instruction
Wachsmuth, Ipke ; Wagner, Sigrid (Ed.)1982Research problems in mathematics education - III
Behr, Merlyn J. ; Bernard, John ; Briars, Diane ; Bright, George W. ; Threadgill-Sowder, Judy ; Wachsmuth, IpkeIn: For the learning of mathematics, Vol. 4 Issue 3, page 22-231984The role of technology in the cognitive development of mathematics learners
Wachsmuth, Ipke ; Becker, Jerry P.In: The journal of mathematical behavior, Vol. 5 Issue 2, page 209-2321986Selected results from the rational number project
Post, Thomas R. ; Behr, Merlyn J. ; Lesh, Richard ; Wachsmuth, Ipke ; Streefland, Leen (Ed.)In: Proceedings of the Ninth International Conference for the Psychology of Mathematics Education, Vol. vol. 1: Individual contributions, page 342-3511985