Cooperative Learning in Mathematics. Mar. 1999, 240-46
A Problem-Based Approach to Mathematics Instruction. Sept. 1999, 516-21
Publications, Apr. 1999, 371-72, Sept. 1999, 550-52, Dec. 1999, 844
A Survey on the Use of Writing-to-Learn in Mathematics Classes. May 1999, 388-89
Understanding Algebraic Notation from the Students' Perspective. May 1999, 436-42
