Type of Document Dissertation Author Uribe-Florez, Lida Johana Author's Email Address uribe@vt.edu URN etd-06222009-153508 Title Teacher Variables and Student Mathematics Learning Related to Manipulative Use Degree PhD Department Teaching and Learning Advisory Committee

Advisor Name Title Wilkins, Jesse L. M. Committee Chair Bannister, Vanessa R. Pitts Committee Member Jones, Brett D. Committee Member Lloyd, Gwendolyn M. Committee Member Keywords

- Teachers Variables
- Mathematics Education
- Student Learning
- Manipulatives
Date of Defense 2009-06-10 Availability unrestricted AbstractIt has been suggested that teachers’ instructional practices mediate the relationship between teacher background variables and student learning (Fennema & Franke, 1992; Mewborn & Cross, 2007). That is, an indirect relationship between these variables exists in which teacher variables are related to teacher instructional practices; and teacher instructional practice is then related to student learning. One instructional practice that has been supported as a way to help build students’ mathematical understanding is the use of manipulatives (e.g., Hiebert et al., 1997). In this dissertation I investigate the role of manipualtive use as a mediator of the relationship between teacher variables and students’ mathematics learning.To examine the potential mediating role of manipulative use, I conducted two separate quantitative studies. In the first study, I examined the relationship between teacher variables and the frequency with which teachers use manipulatives in their classroom activities. Using data from 503 in-service elementary teachers, I investigated the relationship between manipulative use and teachers’ beliefs about manipulatives, the grade level they teach, their age and experience, as well as the interrelationship among these teacher variables. Teachers’ beliefs and grade level were found to be important predictors of manipulative use. In the second study, I examined the relationship between manipulative use and mathematics learning of elementary- aged students (K-5). Data for this study were drawn from the Early Childhood Longitudinal Study (ECLS), and analyzed using a two-level hierarchical linear model and graphical techniques. I also investigated the moderating effects of student home language on this relationship. A positive relationship between the frequency of manipulative use and student mathematics learning was found. Home language was not found to moderate this relationship.

Results from this manuscript dissertation seem to support the claim of Fennema and Franke (1992) and Mewborn and Cross (2007) about the mediating role of teacher instructional practice on the relationship between teacher variables and student learning. In particular, combining the results from the two studies, teachers holding positive beliefs about manipulatives tend to use these devices more often in their classroom activities, and teachers in lower grades tend to use manipulatives more often than teachers in the upper grades; and when students use manipulatives more often in their mathematics lessons, their mathematical learning tends to increase. Thus, together these findings suggest a tenable indirect relationship between teacher variables and student learning. That is, teacher variables are related to manipulative use which in turn is related to students’ mathematics learning. Together these two studies provide a more complete picture of teacher factors and student outcomes as they relate to manipulative use in elementary mathematics classrooms. Implications and future directions for research on manipulative use in the teaching and learning of mathematics are discussed.

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