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Organization of the Study
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8th grade achievement in mathematics ANALYSIS OF VARIANCE areas of learning attitudes toward mathematics average achievers Basic Skills classroom common fractions computation skills computation with common concepts and computation control group critical F-value curriculum decimal fractions DIAGNOSTIC ARITHMETIC SUBTESTS Diagnostic Arithmetic Test difficulties in mathematics disadvantaged children disadvantaged students experimental and control EXPERIMENTAL CONTROL experimental group F-ratios favor Grade Eight grade high achievers grade level grade low achievers grade students hand-held calculators high achievement group instruction Iowa Tests Irving Elementary School learning difficulties mathematics achievement mathematics areas mathematics concepts mathematics problem solving Maywood mean gain score Mean S. D. Means and Standard measure mathematics Null Hypothesis percent posttest PRETEST MEAN SCORES pupils rational numbers seventh grade significant difference SMSG Standard Deviations Stanford Diagnostic Arithmetic System and Operations TABLE teacher teaching mathematics Tests of Academic Tests of Basic treatment and grade treatment groups VARIANCE FOR EXPERIMENTAL Whole Numbers