Construct Validation of an Instrument That Assesses Quality of Instruction in Community College Algebra

The Evaluating the Quality of Instruction in Post-secondary Mathematics (EQIPM) is a 14-item instrument that uses videos of teaching to investigate the quality of instruction in college algebra courses taught at community colleges. We hypothesize that quality of instruction can be characterized along three distinct factors, the interactions between: (a) students and the content, (b) instructors and the content, and (c) students and the instructors. We used confirmatory factor analysis to empirically evaluate this hypothesis. Using coding of over 900 segments of video of instruction from 40 intermediate and college algebra teachers from eight community colleges, we performed a factor analysis to identify the structure of the instrument. Our findings suggest that the EQIPM instrument captures the three hypothesized underlying factors of quality of instruction with adequate fit statistics and factor loadings. The availability of this instrument opens the door for further research on aspects of quality that influence student performance and for promising programs of professional development for community college faculty teaching mathematics. SUMMARY The EQIPM is an instrument that is designed to be used in community college algebra classes to ensure that the instructors show adequate quality of instruction. In this article, we show that it has been used with community college instructors and has shown to be effective and that the individual items in the measure work well together as a whole. In this way, we show that this instrument can be implemented in community college algebra classes across the nation.