The purpose of this study is to examine two components of a statewide professional development program designed to improve mathematics instruction in Texas: perceptions of train-the-participants and mathematics classroom processes during mathematics instruction. The dissertation utilized a multiple journal article format to explore each component as a stand-alone, yet connected, study using data from an evaluation of the statewide professional development program. The first study explored the impact of the train-the-trainer model used in the professional development program. An online survey was administered to participants to determine their attitudes about a new mathematics curriculum, as well as the potential impact of the curriculum on teacher knowledge and student achievement in mathematics. Descriptive statistics identified the number of trainers who provided professional development in Texas. Independent sample t-tests revealed no statistically significant differences in the attitudes of the participant groups. A content analysis identified themes related to conceptual knowledge, instructional strategies, and classroom interaction as possible impact on teacher content knowledge and student achievement. The second study examined the long-term effects of the statewide professional development program on mathematics classroom processes from one elementary school district in Texas. Quantitative analysis of the systematic classroom observation indicated significant differences in the classroom processes of teachers who participated versus those who did not participate in the professional development program. Descriptive statistics identified the most frequently observed Setting, Instructional Orientation, and Instructional Practice used by teachers, and t-test identified significant different in the classroom processes of teachers who participated versus those who did not participate in the professional development program. The findings from this dissertation have implications on mathematics education research. First, curriculum developers should monitor trainers' attitudes about curriculum materials on an on-going basis to establish differences over time. Second, classroom observations should follow professional development to determine the long term effects of the strategies used by teachers during mathematics instruction.

The purpose of the study was to observe pre-kindergarten through second-grade public school classrooms, specifically noting child-centered and teacher-directed pedagogical approaches, by simultaneously examining: student behavior and activity structure, teacher instructional orientation and rationale, and overall classroom environment. The quantitative study built upon the work of Pianta, examining classroom instruction and its effect on student engagement and educational quality; however, unlike previous studies, researchers in the current study observed the nature of activity structure and various student demographic variables. Additionally, dissimilar to prior classroom observation studies, which typically included an overwhelming percentage of White students, Hispanic and African American students comprised a large percentage of the sample. And because policy-makers have called for more research-based information on classroom instruction in the early childhood setting, an additional contribution is the use of systematic observation and analysis of young learners’ experiences within their classrooms. The multi-faceted approach to classroom observation yielded one critical result: Little to no variation existed in the activities in which young children were engaged in their classrooms, nor in the instructional practices utilized by their early childhood teachers. Accordingly, the study revealed few differences in student behavior and teacher practices by student sex, student ethnicity, grade-level, English language proficiency, and/or economic status. Instruction in these classrooms was almost entirely standardized; however, three statistically significant findings showed that: (a) students taught by teachers rated as having a higher developmentally appropriate instructional practices (DAIP) score were more likely to be on-task and less likely to be off-task; (b) students taught by teachers with a higher DAIP score were significantly more likely to be working kinesthetically, answering teacher-posed questions, and freely exploring; and (c) students taught by teachers with a lower DAIP score were significantly more likely to be distracted and/or not engaging in activity. Study findings were significant, as, despite research showing the unfavorable effects that highly teacher-centered, scripted classrooms have on young students’ engagement and subsequent learning outcomes, students continue to be taught in the same way—one in which reaching a designated test score appears to be the singular, ultimate objective.