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The Nature And Role Of Physical Models In Enhancing Sixth Grade Students' Mental Models Of Groundwater And Groundwater Processes, Debra Lynne Foster Duffy

Teaching & Learning Theses & Dissertations

Through a non-experimental descriptive and comparative mixed-methods approach, this study investigated the experiences of sixth grade earth science students with groundwater physical models through an extended SE learning cycle format. The data collection was based on a series of quantitative and qualitative research tools intended to investigate students' ideas and changes in ideas rather than measure their achievement. The measures included a groundwater survey, classroom observations, and one-on-one follow-up student interviews for triangulation of data sources. The research was carried out at a K-12 independent school in eastern Virginia using two classes of sixth grade earth science students (n=30).

The …

The Impact Of Developmental Mathematics Courses And Age, Gender, And Race And Ethnicity On Persistence And Academic Performance In Virginia Community Colleges, James Dael Wolfle

Teaching & Learning Theses & Dissertations

This research study examined the 2006 cohort of First-Time-in-College students from all 23 community colleges in Virginia. The goal was to examine the persistence of these students to the fall 2007 semester and the success of these students in their first college-level mathematics course. The main predictor variable was whether the first mathematics course taken was a developmental or college-level course. Other main predictor variables examined were the age, gender, and race and ethnicity of the student. Race and ethnicity was broken into the categories White, Black, and Other. Interaction variables were created to determine if age, race and ethnicity, …