The primary focus of this education leadership portfolio is to reconstruct lessons on chemical reaction concepts for teachers to use and reach all learners of chemistry in Cecil County Public Schools. As a high school chemistry teacher, I have observed that student enrollment in chemistry is relatively low, and students show little enthusiasm…

This work describes three case studies conducted to address two major problems in the area of chemistry education research, the lack of reported psychometrics regarding instrument scores, and the need for well-characterized assessments to evaluate college chemistry curricula. The first case study describes a psychometric evaluation of the Colorado…

School-based HIV/AIDS science education has the potential to impact students when integrated into the science curriculum. However, this mixed method study shows that school-based HIV/AIDS science education is often not infused into career subjects such as science education but integrated into civics education and taught by teachers who lack the…

This is a collective case study seeking to develop detailed descriptions of how programming an agent-based simulation influences a group of 8th grade students' model-based inquiry (MBI) by examining students' agent-based programmable modeling (ABPM) processes and the learning outcomes. The context of the present study was a biology unit on…

In order to eliminate student misconceptions concerning biological evolution, it is important to identify their sources. The purposes of this study were to: (a) identify biological evolution-related misconceptions held by Oklahoma public high school Biology I teachers; (b) identify biological evolution-related misconceptions held by Oklahoma…

This study reports middle school astronomy classes that implemented photographs and classroom response systems (CRSs) in a discussion-oriented pedagogy with a curriculum unit for the topics of "day-night" and "cause of seasons." In the new pedagogy, a teacher presented conceptual questions with photographs, her 6th grade…