2016-12-29

Alvarado Wittmann Rogers Millay on Teacher knowledge of coldness

Carolina Alvarado, Michael C. Wittmann, Adam Z. Rogers, and Laura A. Millay

Problematizing "cold" with K12 Science Teachers

In the Maine Physical Sciences Partnership (MainePSP), we have observed that students improve the way they analyze thermal energy after instruction. Still, many of them continue to use the idea that "coldness" transfers. Past researchers have identified that "cold" is commonly perceived as a separate heat energy. Nevertheless, we have not found specific activities to address this idea. We present analysis of students' conceptual understanding of energy transfer and how the use of coldness as an entity plays a role in it. We explore how both ideas interact with each other using two different multiple choice items. To illustrate the difficulty of addressing student difficulties with coldness, we analyze a collaborative session among K-12 teachers who modeled energy transfers in scenarios similar to the student items and had to work to reconcile the conflict between the two models. Our study shows how the concept of coldness as an energy entity can co-exist and be in conflict with the idea of thermal energy, even after instruction.

C. Alvarado, M. C. Wittmann, A. Z. Rogers, and L. A. Millay, Problematizing "cold" with K12 Science Teachers, 2016 PERC Proceedings [Sacramento, CA, July 20-21, 2016], edited by D. L. Jones, L. Ding, and A. Traxler, doi:10.1119/perc.2016.pr.003.

Ferm Speirs Stetzer Lindsey on using reasoning chains

William N. Ferm Jr., J. Caleb Speirs, MacKenzie R. Stetzer, and Beth A. Lindsey

Investigating student ability to follow and interact with reasoning chains

The effectiveness of scaffolded, research-based instruction in physics has been extensively documented in the literature. However, much less is known about the development of students' reasoning skills in these research-based instructional environments. As part of a larger collaborative project, we have been designing and implementing tasks to assess the extent to which introductory physics students are able to logically follow and interact with hypothetical student reasoning chains in a variety of physics contexts. In this paper, we report preliminary results from a "Follow Reasoning" task in which students are asked to infer the conclusions that would be drawn from different lines of reasoning articulated by hypothetical students and provide justification for that inference.

W. N. F. Jr., J. C. Speirs, M. R. Stetzer, and B. A. Lindsey, Investigating student ability to follow and interact with reasoning chains, 2016 PERC Proceedings [Sacramento, CA, July 20-21, 2016], edited by D. L. Jones, L. Ding, and A. Traxler, doi:10.1119/perc.2016.pr.025.

Schermerhorn and Thompson on symbolic forms and differential length elements

Benjamin P. Schermerhorn and John R. Thompson

Students’ use of symbolic forms when constructing differential length elements

As part of an effort to examine students' understanding of the structure of non-Cartesian coordinate systems and the differential vector elements associated with these systems, students in junior-level electricity and magnetism (E&M) were interviewed in pairs. Students constructed differential length and volume elements for an unconventional spherical coordinate system. A symbolic forms analysis found that students invoked known as well as novel symbolic forms when building these vector expressions. Further analysis suggests that student difficulties were primarily conceptual rather than symbolic.

B. P. Schermerhorn and J. R. Thompson, Students’ use of symbolic forms when constructing differential length elements, 2016 PERC Proceedings [Sacramento, CA, July 20-21, 2016], edited by D. L. Jones, L. Ding, and A. Traxler, doi:10.1119/perc.2016.pr.073.

Speirs Ferm Stetzer Lindsey on reasoning chains

J. Caleb Speirs, William N. Ferm Jr., MacKenzie R. Stetzer, and Beth A. Lindsey

Probing Student Ability to Construct Reasoning Chains: A New Methodology

Students are often asked to construct qualitative reasoning chains during scaffolded, research-based physics instruction. As part of a multi-institutional effort to investigate and assess the development of student reasoning skills in physics, we have been designing tasks that probe the extent to which students can create and evaluate reasoning chains. In one task, students are provided with correct reasoning elements (i.e., true statements about the physical situation as well as correct concepts and mathematical relationships) and are asked to assemble them into an argument that they can use to answer a specified physics problem. In this paper, the task is described in detail and preliminary results are presented.

J. C. Speirs, W. N. F. Jr., M. R. Stetzer, and B. A. Lindsey, Probing Student Ability to Construct Reasoning Chains: A New Methodology, 2016 PERC Proceedings [Sacramento, CA, July 20-21, 2016], edited by D. L. Jones, L. Ding, and A. Traxler, doi:10.1119/perc.2016.pr.077.

Wittmann Alvarado Millay on facets and metaphors of teacher knowledge of student ideas

Michael C. Wittmann, Carolina Alvarado, and Laura A. Millay

Teachers' explanations of student difficulties with gravitational potential energy

In a teacher professional development meeting, teachers were asked a question about potential energy and then to discuss why students might give a particular response to it. Working together in a large group, they came up with responses and explanations that touched on multiple ways of thinking about energy and how these might affect student responses. We observed that teachers were aware of common metaphors for thinking about energy (like energy-as-a-substance) and that they gave multiple explanations for how students might have difficulties in applying these metaphors (e.g., energy is "used up" because of travel time, travel distance, or the effort exerted during travel). Additional explanations showed that teachers recognized how students might bring these ideas to the classroom. We discuss the need for teachers to respond to multiple grain sizes of student thinking, including the metaphors they use and the different facets of each. Assessments that help with this will be of greater value to teachers than the assessment we present.

M. C. Wittmann, C. Alvarado, and L. A. Millay, Teachers' explanations of student difficulties with gravitational potential energy, 2016 PERC Proceedings [Sacramento, CA, July 20-21, 2016], edited by D. L. Jones, L. Ding, and A. Traxler, doi:10.1119/perc.2016.pr.094.

2016-08-01

Nissen, Shemwell, on gender and self-efficacy

Jayson M. Nissen and Jonathan T. Shemwell

Gender, experience, and self-efficacy in introductory physics

Phys. Rev. Phys. Educ. Res. 12, 020105 – Published 1 August 2016 [This paper is part of the Focused Collection on Gender in Physics.]

There is growing evidence of persistent gender achievement gaps in university physics instruction, not only for learning physics content, but also for developing productive attitudes and beliefs about learning physics. These gaps occur in both traditional and interactive-engagement (IE) styles of physics instruction. We investigated one gender gap in the area of attitudes and beliefs. This was men’s and women’s physics self-efficacy, which comprises students’ thoughts and feelings about their capabilities to succeed as learners in physics. According to extant research using pre- and post-course surveys, the self-efficacy of both men and women tends to be reduced after taking traditional and IE physics courses. Moreover, self-efficacy is reduced further for women than for men. However, it remains unclear from these studies whether this gender difference is caused by physics instruction. It may be, for instance, that the greater reduction of women’s self-efficacy in physics merely reflects a broader trend in university education that has little to do with physics per se. We investigated this and other alternative causes, using an in-the-moment measurement technique called the Experience Sampling Method (ESM). We used ESM to collect multiple samples of university students’ feelings of self-efficacy during four types of activity for two one-week periods: (i) an introductory IE physics course, (ii) students’ other introductory STEM courses, (iii) their non-STEM courses, and (iv) their activities outside of school. We found that women experienced the IE physics course with lower self-efficacy than men, but for the other three activity types, women’s self-efficacy was not reliably different from men’s. We therefore concluded that the experience of physics instruction in the IE physics course depressed women’s self-efficacy. Using complementary measures showing the IE physics course to be similar to others in which gendered self-efficacy effects have been consistently observed, we further concluded that IE physics instruction in general is likely to be detrimental to women’s self-efficacy. Consequently, there is a clear need to redress this inequity in IE physics, and probably also in traditional instruction.

2016-05-13

Kranich MST on teacher knowledge of accelerated motion

Gregory D. Kranich

Inconsistent Conceptions of Acceleration Contributing to Formative Assessment Limitations

Science, technology, engineering, and mathematics (STEM) education has become a national priority in light of measures indicating marginal student interest and success in the United States. Just as evidence is integral to policy decisions, so too do teachers depend on evidence to inform instructional choices. Classroom assessment remains a touchstone means of gathering such evidence as indicators of students’ progress, and increasingly, teachers are designing, implementing, and interpreting assessments in collaboration with one another.

In rural Maine, the work of the Maine Physical Sciences Partnership (MainePSP) has enabled science educators to come together as a supportive professional community. We focused on a team of MainePSP teachers as they developed common assessments for a unit on force and motion concepts. During group discussions individual members vetted their own ideas about acceleration comprising the following perspectives: a) terminology used to describe acceleration, b) the sign of acceleration as an indicator of speeding up or slowing down, and c) the sign of acceleration as an indicator of direction, dependent on the change in both the magnitude and direction of velocity. The latter two ideas could be in agreement (when motion is in the positive direction) or conflict (when motion is in the negative direction). With objectives to accomplish and limited time, the team opted to only include an item about motion in the positive direction, leaving the inconsistencies of their ideas unresolved. As a result, the assessment lacked the ability to provide sufficient evidence of which idea students might hold.

We examined the group’s interactions as captured by video recording and employed basic qualitative methods to analyze the event as a case study. Our findings suggest that an incomplete understanding of acceleration limited the teachers’ ability to resolve their initial conflict. Further, the item’s susceptibility for students to provide correct answers for the wrong reasons was not recognized at the time. We consider the item’s implications on teachers interpreting student assessment responses, masking a potential need for adjusted instruction by teachers and conceptual refinement by students. Finally, we discuss the pedagogical implications and limitations of this study.

Kranich, Gregory D., "Inconsistent Conceptions of Acceleration Contributing to Formative Assessment Limitations" (2016). Electronic Theses and Dissertations. Paper 2438.

http://digitalcommons.library.umaine.edu/etd/2438 - note that you will need to create a Digital Commons account (for free) to download a copy.

2016-02-10

Michael Wittmann on research-driven professional development in the MainePSP

Michael C. Wittmann

Rural outreach in Maine: A research-driven professional development teacher community

Published abstract for the APS April Meeting 2016 (part of session R6: Engaging the Public Through a Variety of Collaborations and Initiatives, April 18, starting 10.45 in room 150ABC)

In the Maine Physical Sciences Partnership (MainePSP), researchers at the University of Maine have joined together with the state's Department of Education, non-profits, and teachers in multiple school districts to create a dynamic and growing community dedicated to improving K12 education of the physical sciences. Through ongoing efforts to introduce and adapt instructional materials, guided by education research and research-guided professional development, we have built a community responsive to student and teacher needs. This work has fed back into the university setting, where teachers are playing a role in graduate courses taken by our Master of Science in Teaching students. In this talk, I will focus on the role of education research in the partnership, showing how we use research in professional development, the development of assessments, and the analysis of the resulting data. I will describe two projects, one to understand how teachers' content knowledge affects the development of items assessing knowledge of acceleration, the other to see how teachers use their content knowledge of systems and energy to make pedagogical choices based on students' incorrect ideas about conservation of energy.

2016-02-06

Lauren Barth-Cohen and Michael Wittmann on coordination classes and group learning

Barth-Cohen, L. & Wittmann, M. C.

Expanding Coordination Class Theory to Capture Conceptual Learning in a Classroom Environment (scroll to p.386)

2016 Proceedings of the International Conference of the Learning Sciences on Feb 5, 2016.

Barth-Cohen, L. & Wittmann, M. C. (2016). Expanding Coordination Class Theory to Capture Conceptual Learning in a Classroom Environment. In Looi, C. K., Polman, J. L., Cress, U., and Reimann, P. (Eds.), Transforming Learning, Empowering Learners: The International Conference of the Learning Sciences (ICLS) 2016, Volume 1 (pp. 386-393) Singapore: International Society of the Learning Sciences.

This article presents an extension to coordination class theory—a theory of conceptual change that was built to capture an individual’s learning in an interview setting. Here we extend that theory to capture group and individual learning in classrooms. The proposed extension focuses on different contexts in the sense of groups’ and individuals’ different interpretations of the same student-generated artifact. We describe instances in which a classroom of 9th grade earth science students created embodied models for a specific scientific concept, the steady state energy of the earth. The students encountered difficulties aligning their embodied models with their conceptual understandings, and yet, they were able to make progress by changing their models to better aligned their understanding of the scientific concept with their newly modified model—instances of individual and group learning. We conclude with discussing implications for designing classrooms learning environments.