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We are conducting out a study to evaluate the effectiveness of structured peer review sessions on student writing skills in introductory physics laboratory courses.&amp;nbsp; Preliminary data suggest that peer review sessions are more efficient for improving students’ technical writing skills.&amp;nbsp; Previously, students were expected to write weekly lab reports over different experiments without peer communication or review.&amp;nbsp; We have now implemented a writing instruction method in which students produce three reports throughout the semester that undergo peer review by fellow students, then are revised based on the feedback they receive, and finally submitted to the instructor for grading.&amp;nbsp; Following a research protocol previously applied to non-peer review student writing, we will be able to compare the effectiveness of both methods.

AAPT WM 21

Effectively Implementing Peer Review into Introductory Physics Laboratory Courses

writing

peer review

laboratory

**Making Physics More Inclusive and Eliminating Exclusionary Practices in Physics**

As a gateway discipline to STEM majors and careers, physics plays a central role in deciding who does, and who doesn't, get to discover and pursue scientific careers. Technical and scientific professionals are rewarded with economic privilege and status which affords them both social and cultural power. Therefore, social justice will be realized only when the opportunity, and the choice, to excel in physics is open to all students. The culture and practices of the physics classroom reflect the culture of physics at large, which raises the question of how our professional physics communities can embrace, rather than inadvertently repel, a diverse group of academics that can help improve physics culture.  To this end, the 2021 Physics Education Research Conference will focus on defining inclusive spaces and practices. Additionally, we will explore strategies for eliminating exclusionary practices in our classrooms, research spaces, and professional organizations. We call on the community to propose sessions that will drive conversations related to these initiatives throughout PERC 2021.

Please download the full program [here. ](https://drive.google.com/file/d/1TRMC_SYJ3PUqXyP7sskA7LRSA8ow0eRE/view?usp=sharing)

PERC SM 21

August 4, 2021 - August 5, 2021 in a Virtual Conference Format

Making Physics More Inclusive and Eliminating Exclusionary Practices in Physics

We are conducting out a study to evaluate the effectiveness of structured peer review sessions on student writing skills in introductory physics laboratory courses.&nbsp; Preliminary data suggest that peer review sessions are more efficient for improving students’ technical writing skills.&nbsp; Previously, students were expected to write weekly lab reports over different experiments without peer communication or review.&nbsp; We have now implemented a writing instruction method in which students produce three reports throughout the semester that undergo peer review by fellow students, then are revised based on the feedback they receive, and finally submitted to the instructor for grading.&nbsp; Following a research protocol previously applied to non-peer review student writing, we will be able to compare the effectiveness of both methods.

technical paper

AAPT® is a strong professional physics science society dedicated to the pursuit of excellence in physical science education.

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- discuss innovations in teaching methods
- share the results of research about teaching and learning.

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Physics students generally encounter only rudimentary concepts of measurement uncertainty analysis in an introductory university physics course. This talk presents a physics-forward more advanced introduction to probability and statistics beginning with loaded dice and chaos concepts in a computational tutorial for first year physics and astronomy students. Subsequent tutorials provide a rigorous frequentist interpretation of nonlinear curve fitting parameters and uncertainties used throughout their laboratory data analysis. Other topics such as Monte Carlo techniques are touched upon. These tutorials and student lab data analysis makes use of MATLAB.

Advanced fitting and uncertainty analysis in introductory physics

In this joint study, we try to uncover the common misconceptions amongst the educators that result from a lack of understanding of the underlying principles involved in the construction of mathematical and scientific concepts. We seek to raise awareness to the issue to provide support to mathematics and science educators in correcting their own misconceptions as well as strategies for identifying and correcting misconceptions held by their students. Research shows that teachers who understand their student’s common misconceptions are more likely to design instruction that will increase student understanding in the subject than teachers who do not. Additionally, teachers with misconceptions themselves unknowingly contribute to the reinforcement of student misconceptions during the teaching and learning cycle. Data will be collected online and anonymously across the state and the country. The target participants include mathematics and science educators in universities, middle and high schools as well as pre-service Mathematics teacher candidates.

A Study on Misconceptions of Mathematics and Science Teachers

The Brief Electricity and Magnetism Assessment (BEMA) is a 31-question assessment designed to assess student understanding of basic principles of electricity and magnetism in an introductory, calculus-based physics course. This study develops a model of student knowledge measured by the BEMA. This is guided by a theoretical model of expert understanding of electricity and magnetism. Multidimensional Item Response Theory (MIRT) was used to investigate a large post-test dataset (N=9666) from a large, western public research university collected over the span of 15 years. An optimal model was found by exploring variations to the theoretical expert model and selecting the model with the optimal MIRT fit parameters.

Multidimensional Item Response Theory and the BEMA

Our investigation of introductory physics students' difficulties with pre-college mathematics has extended to five campuses at four universities, employing a 14-item diagnostic administered near the beginning of the semester.&nbsp;&nbsp;More than&nbsp;6000 students have taken the diagnostic&nbsp;over the past four years. We find (1) consistently high error rates (30-70%) on trigonometry, algebra, geometry, and graphing problems, (2) significant degradation of algebra performance when symbolic coefficients are substituted for numerical coefficients, and when Greek letters are substituted for Latin letters, and (3) high performance consistency among diverse question types, such that&nbsp;performance on a single test item can reliably predict overall diagnostic performance. A new online version of the diagnostic has been tested with small samples and seems to produce results that are largely consistent with the written version. Performance on non-mathematical conceptual physics questions, added&nbsp;to the online diagnostic, is significantly correlated with performance on the mathematics questions.

Consistency of Students' Mathematical Difficulties May Allow Reliable Performance Predictability

Over the past four years, we have administered over 6,000 mathematics diagnostics to introductory physics students at four large state universities. Previously, our hand-written diagnostic only included pure mathematics problems in graphing, trigonometry, geometry, and algebra. While these problems have shed light on the severity and nature of students’ mathematical difficulties, our new online diagnostic aims to also measure performance on conceptual physics problems (Newton’s second and third laws). We find the mathematics portion of our online diagnostic shares the same characteristics as older hand-written versions with similar correct-response rates, internal consistency, and performance predictability.&nbsp;Our analyses show that overall mathematics performance is correlated with performance on the newly added physics problems (r=0.35). Here, we present our most recent findings while examining the observed relationship between math and physics performance.&nbsp;

Introductory Physics Students’ Mathematical Preparedness and Conceptual Understanding of Force

Under NSF funding we have been developing and evaluating Interactive Video-Enhanced Tutorials (IVETs) which are designed to help students learn to use expert-like problem-solving strategies for college students in introductory physics. The tutorials involve web-based activities which lead students through a solution by providing guidance and feedback depending on the choices they make within the activities. This presentation will showcase one of our IVETs, namely Angular Momentum, and provide details about its design features, which involve multimedia principles of learning and research on human learning and memory, and subsequent impact on student problem-solving abilities. *Work supported by the NSF IUSE Program (DUE #1821396)

Impact of an Angular Momentum Problem-solving Tutorial on Student Performance

As a part of our larger research on students’ conceptions on fluids, our group has been developing a taxonomy categorizing alternate conceptions about buoyancy and giving assessments in various introductory courses to determine the prevalence of selected taxonomy items.&nbsp; This talk will focus on a few of those taxonomy items, discussing the populations in which they were identified and how they relate to the overall taxonomy construction.&nbsp;

Discussion of Selected Alternate Conceptions about Buoyancy in College Populations

As a part of our larger research on students’ conceptions on fluids, our group has been developing a taxonomy categorizing alternate conceptions about buoyancy and giving assessments in various introductory courses to determine the prevalence of selected taxonomy items.&nbsp; This talk will focus on the results of selected assessment questions given to multiple introductory physics courses at Grove City College; some questions were also given to students at the University of Washington.&nbsp; The prevalence of each alternate conception probed will be discussed, along with similarities and differences between the populations.&nbsp;

Prevalence of Selected Alternate Conceptions about Buoyancy in College Populations

While the classic brachistochrone problem is too complicated to solve in an introductory course, students should be able to understand the qualitative features of the problem. We asked the students a number of questions about this problem. For this talk,&nbsp; we will focus on the following question "Explain how it is possible for the mass to start from rest at different points along the cycloid and still reach the bottom at the same time."&nbsp; Their answers display a wide variety of misconceptions and we will highlight some specific answers during this talk.

Introductory Students' Qualitative Analysis of the Brachistochrone

We will present our experience assigning specific roles to each member of student groups to assist them with group dynamics when working through cooperative laboratory tasks. The initial implementation was inspired by an introductory POGIL seminar given to science faculty. Connections will be made to the work done by the Hellers from the University of Minnesota on Group Problem Solving Strategies in introductory physics classes. We will also present results of informal polling of our Faculty Online Learning Community (FOLC) on techniques for forming effective groups. This is part of a series of talks stemming from the NextGen PET FOLC project. This work was supported by the National Science Foundation grant NSF DUE-1626496.

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Advanced fitting and uncertainty analysis in introductory physics

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