In it “Position Statement on Calculators in the Mathematics Classroom” the National Council of Teachers of Mathematics recommends that calculators be integrated into all aspect of school mathematics, including class work, homework, and evaluation (NCTM 1986). This author cited the need for a comprehensive calculator proj ect encompassing all facet as of elementary mathematics education, a project that should include the development of a calculator-integrated curriculum. an extensive training program for teachers, the development of curriculum-support materials, change in textbook, workshops for parents and community group, and a change in evaluation of mathematics achievement (Williams 1987).

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To diagnose means to determine the nature of a problem or situation. Applied to the (mathematics) classroom, it means to identify weakness or deficiencies that could block a student's progress in learning. Although the process of diagnosis is usually associated with formal testing, the focus of this article will be on diagnosis in a normal classroom setting.