Development of the Heat and Energy Concept Inventory: Preliminary Results on the Prevalence and Persistence of Engineering Students' Misconceptions

BACKGROUND Students frequently hold a number of misconceptions related to temperature, heat and energy. There is not currently a concept inventory with sufficiently high internal reliability to assess these concept areas for research purposes. Consequently, there is little data on the prevalence of these misconceptions amongst undergraduate engineering students. PURPOSE (HYPOTHESIS) This work presents the Heat and Energy Concept Inventory (HECI) to assess prevalent misconceptions related to: (1) Temperature vs. Energy, (2) Temperature vs. Perceptions of Hot and Cold, (3) Factors that affect the Rate vs. Amount of Heat Transfer and (4) Thermal Radiation. The HECI is also used to document the prevalence of misconceptions amongst undergraduate engineering students. DESIGN/METHOD Item analysis, guided by classical test theory, was used to refine individual questions on the HECI. The HECI was used in a one group, pre-test-post-test design to assess the prevalence and persistence of targeted misconceptions amongst a population of undergraduate engineering students at diverse institutions. RESULTS Internal consistency reliability was assessed using Kuder-Richardson Formula 20; values were 0.85 for the entire instrument and ranged from 0.59 to 0.76 for the four subcategories of the HECI. Student performance on the HECI went from 49.2% to 54.5% after instruction. Gains on each of the individual subscales of the HECI, while generally statistically significant, were similarly modest. CONCLUSIONS The HECI provides sufficiently high estimates of internal consistency reliability to be used as a research tool to assess students' understanding of the targeted concepts. Use of the instrument demonstrates that student misconceptions are both prevalent and resistant to change through standard instruction.

Influence of Engineering Instructors' Teaching and Learning Beliefs on Pedagogies in Engineering Science Courses

This study explored how academics' beliefs about teaching and learning influenced their teaching in engineering science courses typically taught in the second or third year of 4-year engineering undergraduate degrees. Data were collected via a national survey of 166 U. S. statics instructors and interviews at two different institutions with 17 instructors of engineering science courses such as thermodynamics, circuits and statics. The study identified a number of common beliefs about how to best support student learning of these topics; each is discussed in relation to the literature about student development and learning. Specific recommendations are given for educational developers to encourage use of research-based instructional strategies in these courses.

The co-evolution of development needs and IOR forms: development by committee in Bosnia

This work highlights opportunities and obstacles to success in four task forces typically found at different times in states of conflict, transition, and development. They include: refugee return, media issues, privatization of state-owned enterprises, and efforts to promote business development. Based on over 180 in-depth interviews and observations of dozens of meetings during five lengthy field research trips to the Bosnian region between 1999 and 2005, this manuscript analyzes how these four task forces differed in terms of context, strategy, organization, and management in an attempt to understand the co-evolution of international development needs and the interorganizational forms that address them.

Career Influences of Music Education Audition Candidates

In this descriptive study, we examined the influences and experiences motivating students to enter college-level music schools as reported by a population of precollegiate students auditioning (but not yet accepted) to music education degree programs. As a follow-up to a published pilot study, this research was designed to quantify the various experiences respondents had as part of their precollege school and community programs that related to teaching and music. Results indicate a strong connection between respondents’ primary musical background and future teaching interest. The top three influential experiences were related to high school ensemble membership (band, choir, orchestra), and the most influential group of individuals in the decision to become a music educator were high school ensemble directors. Respondents from all four primary background groups (band, choir, orchestra, and general or other) rated private lesson teaching as their second strongest future teaching interest, just behind teaching at the high school level in their primary background. Respondents rated parents as moderately influential on their desire to become a music teacher.