Utrecht / Columbus / Reston / Minneapolis / London / Boston / New York / /
Company
Addison-Wesley Publishing Co. / Example B. Sally / Wellman / D. Van Nostrand Co. / Processes / Mathematics Concepts / Reidel Publishing Co. / Concepts / Example E. Mary / /
Country
Netherlands / /
Currency
USD / cent / /
Event
Product Issues / M&A / Product Recall / /
Facility
Building Up Mathematics / /
IndustryTerm
intricate and ever-expanding web / algorithmic solutions / cross-multiplication algorithm / /
Organization
National Science Foundation / North American Chapter of the International Group for the Psychology of Mathematics Education / National Council of Teachers of Mathematics / Society of Research / /
Person
Merlyn J. Behr / Ipke Wachsmuth / Elizabeth Stage / Warren Wollman / Jessica / Richard Lesh / Barry Karplus / Lawson / Edward Silver / Colin / Nicole / Marsha Landau / Robert Karplus / Lawrence Erlbaum / Marilyn Shelton / Steven Pulas / Suzanne Damarin / Anton Wollman / /
Rational Number Project Home Page Lesh, R., Post, T., & Behr, MProportional Reasoning. In J. Hiebert & M. Behr (Eds.) Number Concepts and Operations in the Middle Grades (ppReston, VA: Lawrence Erlb