See Numbers, Number Systems, Number Theory.
Cat and Mouse, Apr 1999, 45659
Dominoes as Fractions: Misconceptions and Understandings. Nov. 1999, 16265
Establishing Fraction Benchmarks, May 1999, 53032
Games and Puzzles
Juniper Green, Apr 1999, 43840
Proportional Reasoning. Jan. 2000, 31013
Readers Write, Oct 1998, 123, 130
Readers Write, NovDec 1998, 149; Jan 1999, 215, 255; Feb 1999, 32223; Mar 1999, 34849
Relating Fractions and Decimals: Listening to Students Talk, Feb 1999, 31821
Using Cases to Integrate Assessment and Instruction, Jan 1999, 23241
Wheel of Fortune for the Mathematics Classroom, Sept 1998, 3236