The purpose of this study was to determine if children's performance in solving verbally stated arithmetic problems varied when word clues were included or omitted. The sample consisted of 382 fifth-grade children enrolled in four schools of one school system. Twelve sets of problems were so constructed that each set contained two similar problem…

A longitudinal study of students' developing understanding of decimal notation has been conducted by testing over 3000 students in Grades 4 to 10 up to 7 times. A pencil-and-paper test based on a carefully designed set of decimal comparison items enabled students' responses to be classified into 11 codes and tracked over time. The paper reports on…

The goal of this study was to assess the relationship between amount of instructional time and student achievement. Two questions were addressed: (a) Do students who have more time allocated to a particular subject area also learn more in that area? and (b) Do students who spend more "engaged time" in a particular subject area learn more in that…

The associations among cognitive automatization, abstract problem solving, and educational performance were studied using 127 fourth to ninth grade students. A number of measures of fast, automatic, and fluent performance (FAF measures) were used: writing the alphabet; reading from a word list; and mentally performing arithmetic operations. The…

In an effort to understand the schooling process, a longitudinal study was conducted of children enrolled in three elementary schools. Children entering first grade in a middle class white school, an integrated lower class school, and an all-black lower class school were followed to the end of third grade. This final report of the study presents…