Thesis (Ph. D.)--University of Missouri-Columbia, 1998. / Typescript. Vita. Includes bibliographical references (leaves 146-153). Also available on the Internet.

Previous research has shown that instruction followed by problem solving (I-PS) is an effective pedagogical approach in many procedural domains, but engaging students in problem solving before instruction (PS-I) can benefit conceptual learning and transfer. However, it is unclear which order of instruction is optimal for domains that rely heavily on both procedural and conceptual knowledge, such as symbolic modeling. This study investigates optimal order of instruction for learning modeling when instruction is based on incorrect examples. In an experiment with 97 eighth graders, we tested which order of instruction, I-PS or PS-I, was most beneficial for learning to create and evaluate mathematical models of rate-based situations, and for transferring learning to create models with different structures. The study also investigated whether optimal order of instruction depended on a student’s prior knowledge. Students in the I-PS condition performed better on model generation, regardless of prior knowledge, but no condition differences were found in model evaluation or transfer outcomes. Students in the PS-I condition reported more instances of confusion. Confusion negatively predicted transfer and showed a trend toward negatively predicting model evaluation. However, confusion did not mediate the relationship between condition and learning outcomes. This study extends the research on the role of instructional order in learning, and its impact on students’ affective experiences.

Although enrollment in advanced mathematics courses is a significant determinant of mathematics achievement, the majority of public school students are not enrolled in advanced mathematics courses in high school. Policy makers are interested in the dynamics of the math course selection process in the eighth grade because it is viewed as a pivotal transitional point when students are confronted with the decision to either enroll in algebra, the first course on the advanced math track, or in regular math. Approximately one third of eighth grade students enroll in algebra, in spite of general availability of the course. Enrollment patterns vary among the four major race/ethnic subgroups - Asian, Hispanic, Black and White. This study constructed and tested a structural equations model that examined the factors influencing math course choice and the course selection process in the eighth grade in public schools. There were three sources of influence in the model: 1) math achievement; 2) school policies and practices; and 3) parents. The model consisted of three exogenous and five endogenous variables. The model was tested five times. It was tested on a nationally representative sample of 7,648 eighth grade public school students. It was also tested separately on the four race/ethnic subgroups comprising the full sample. The study used data from student and parent files of the base year survey of the National Education Longitudinal Study of 1988 (NELS 88), a major national study conducted under the auspices of the National Center for Education Statistics (NCES). For the full sample, the major school and parental factors influencing a student’s math course choice were math track placement, parents’ educational expectations and school-parent algebra push. Of the two achievement influences, standardized math test scores had the stronger influence on the outcome variable. Prior math grades influenced math course choice, but to a lesser extent and was influential largely due to an indirect effect. Although these factors were important for each of the subgroups, the influence of the factors varied among the subgroups. The model fitted the data fairly well for the full sample and the Asian and White subgroups, but less well for the Hispanic and Black subgroups. / Ph. D.

This study was designed to attain the following purposes: To determine the exploratory courses which were being offered in the eighth grade of the five-year high school programs. To determine the course content of these exploratory courses in homemaking. To determine the practices followed in organizing and conducting these courses. To determine the length of the exploratory course in homemaking. To determine what effect the eighth-grade exploratory homemaking course had on enrollment in the vocational course in homemaking. / Master of Science

The three basic purposes of this study were (1) to determine relationships existing between academic achievement in middle schools and academic achievement in traditional junior high schools, (2) to determine the relationships existing between personal adjustment in middle schools and personal adjustment in traditional junior high schools, and (3) to determine the relationships between academic achievement and personal adjustment in both middle schools and traditional junior high schools.

The purposes of this study were to apply a model of achievement-related behaviors to a sample of eighth-grade girls and to ascertain whether this theoretical model continued to describe girls' internal beliefs regarding mathematics.

This study sought to determine if there were differences in the types of reading interests of seventh- and eighth-grade pupils associated with their racial origins, their socioeconomic status, or their school environments. It also sought to consider the strength of reading interest scores as related to other variables and to consider the relationship between these scores and the number of hours spent in reading and the change in amount of reading since the previous school year.

This study investigated the effects of technology education, science, and mathematics (TSM) curriculum integration on the technological problem-solving ability of eighth grade technology education students. The researcher used a quasi-experimental, nonequivalent control group design to compare the performance of students receiving correlated TSM integration to those not receiving integration in an adapted Technology, Science, Mathematics Integration Project Activity (LaPorte & Sanders, 1993). The students were to design, construct, and evaluate wind collectors to generate electricity. The collectors were mounted on a generator for the pretest and posttest measurements. The measure for treatment effect was the output wattage of the generator for each student's wind collector. The samples were drawn from middle schools that had two technology education teachers in the same school, each teaching eighth graders. The pilot study sample (N = 51) was selected from a middle school in rural south-central Virginia. The study sample (N = 33) was selected from a middle school in a suburb of Richmond, Virginia. Treatment group technology education teachers employed echnological problem solving, and they correlated instruction of key concepts with science and mathematics teachers using the adapted TSM Integration Activity. The control group technology education teachers did not correlate instruction with science and mathematics teachers. There was no significant difference between the treatment and control groups for technological problem solving. Evidence suggested that students were applying science and mathematics concepts. The researcher concluded that TSM curriculum integration may promote the application of science and mathematics concepts to technological problem solving and does not hinder the technological problem-solving ability of eighth technology education students. / Ph. D.

The purpose of this study was to determine the relationship between career education and the career maturity of eighth-grade students as measured by the Attitude Scale and the Competence Test of the Career Maturity Inventory. A posttest only experimental design was used for the study. The subjects were selected from a population of eighth-grade students in a suburban school district in north central Texas and randomly assigned to treatment and control groups. The treatment group had a career education class for forty-five minutes each day for eighteen weeks. The control group selected an additional elective. Multiple t tests were used to test the hypotheses of the study. The hypotheses were grouped into the areas of maturity of career attitudes, maturity of career competencies, sex and career maturity, school and career maturity, and teacher and career maturity.

This case study analyzed the roles development and implementation have had in the Eighth-grade Algebra I policy and the California High School Exit Exam policy. From a political, economical, and historical perspective, the intended purposes of many education policies have been distorted due to implementation. By investigating national and California education policies, this case study describes the roles development and implementation have had education policies. In addition, this case study found that the state of education in California is reliant on many mitigating factors affecting education policy development and implementation: Budget cuts, achievement gaps particularly with children of color, and teacher qualification issues. However, systemic education reform requires policy makers to juggle their political affiliations and the needs of students to create policies that improve curriculum, improve student achievement, and supports teachers and administrators. When policy makers do not utilize informed constituencies to assist in policy development, mandates such as the Eighth-grade Algebra I policy are created. Well developed and researched education policies like the California High School Exit Exam, which took about six years to develop before it was implemented in California, was successful because it involved collaboration of various interest groups, educators, local education agencies, and school administrators. Policy makers must learn to work in collaboration with its constituency to develop policies that empower schools to sustain and extend greater individualization on one hand, and broaden community interest on the other. The future of California schools in regard to the Race to the Top policies remain to be seen, but if policy makers rely on the informed voices of education researchers, constituents who are willing to put students' needs before their own political conquests, school administrators, teachers, parents, and students, then California's school will have a future of systemic reform that will be bright.