Graduation Date


Document Type

Master's Thesis

Degree Name

Master of Science

Department or Program


Department or Program Chair

Elizabeth Truesdell PhD

First Reader

Suresh Appavoo, EdD


This teacher research action study compared the performance of students in mathematical critical reasoning for selected strands of math under the new Common Core Math Standards with their performance under the old California State Standards. Student scores from in-class tests and quizzes were comparatively analyzed over the duration of a year in one sixth grade classroom in Northern California. Findings from this study indicated a minimal increase in the critical reasoning skills of the students under the Common Core Standards when compared to the California State Standards. The results of the study imply that there is a need for longitudinal research that measures mathematical critical reasoning that correlates with changes in the teaching standards.