Individual fifth grade classrooms in five schools of differing socioeconomic levels were used in a study to analyze the reaction of the school to the experimental format, the adequacy of the test instrument, and the differential effects of the experimental treatments. Students were instructed in one of two experimental addition algorithms,…

Types of errors made by children in addition and subtraction are presented and discussed. Suggestions are given for testing, diagnosing, and prescribing for instruction. (MNS)

Evaluation sheets and developmental checklists, prepared by three special education departments, are provided to facilitate continuous measurement of student progress in elementary school mathematics. One hundred forty-three objectives are given, and each is followed by a continuum-oriented set of worksheet-type pages on mathematics skills. The…

How teachers can diagnose difficulties with computation is discussed, with emphasis on how to develop diagnostic tests. How to use such tests to plan remediation is considered in terms of several types of errors. (MN)