Activities: Estimating with Nice Fractions, Nov 1986, 629-634, 647
Activities: Estimation, Qualitative Thinking, and Problem Solving, Sep 1987, 461-468
Arithmetricks, Feb 1988, 101-105
Computational Alternatives for the Twenty-First Century: Cross-Cultural Perspectives from Japan and the United States, Jan 1995, 60
Estimating the Volumes of Solid Figures with Curved Surfaces, May 1991, 392-395
Estimation Skill Builders, Jan 1986, 75
Innumeracy: Mathematical Illiteracy and Its Consequences, Oct 1989, 577-578
Mathematics for Technology: Part 1, Estimation & Part 2, More Trigonometry, Sep 1994, 461
Six-Legged Math, Oct 1987, 524-526
