Chemistry Education Research and Practice最新文献

{"title":"A case study on graduate teaching assistants’ teacher noticing when enacting a case-comparison activity in organic chemistry","authors":"Ina Zaimi, Daisy B. Haas, Matthew J. Silverstein and Ginger V. Shultz","doi":"10.1039/D4RP00093E","DOIUrl":"10.1039/D4RP00093E","url":null,"abstract":"<p >Graduate teaching assistants (GTAs) hold a unique positionality as instructors and research mentors to undergraduate students, research mentees to faculty members, and employees to an institution. With limited pedagogical training and teaching resources, the enactment of planned teaching activities and learning resources may be influenced by how GTAs conceptualize their teacher identity, role, and experiences. In this study, we explored how chemistry GTAs enacted a scaffolded, cooperative-learning case-comparison activity in a second-semester organic chemistry laboratory course. Our study was guided by the conceptual framework of teacher noticing. Teacher noticing – an instructor observing “important” instructional moments and connecting their observations to theory and practice – is a part of developing instructional responses based on students’ reasoning. Pairing this conceptual framework with a case study methodology, we recruited two GTAs, and conducted a pre-observation interview, two observations, and a post-observation interview. We explored GTAs’ teacher noticing – what they observed and interpreted as well as how they shaped and responded. We exposed the tension and the resolution between learning objectives (<em>i.e.</em>, objectives set by the instructional team for students) and teaching objectives (<em>i.e.</em>, objectives set by the GTAs for themselves and their students). GTAs’ framing seemed to influence their shaping, and their shaping seemed to balance the instructional team's learning objective and GTAs’ teaching objectives. Because chemistry GTAs serve as instructors in many science undergraduate courses, understanding the unique GTA framing may support both graduate and undergraduate learning experiences. Furthermore, our study has implications for researchers who design organic chemistry learning resources to consider different ways GTAs may support students’ learning. This study additionally has implications for faculty instructors to develop transformative, consistent professional development opportunities focused on transparency, collaboration, and community in teacher learning.</p>","PeriodicalId":69,"journal":{"name":"Chemistry Education Research and Practice","volume":" 4","pages":" 1268-1288"},"PeriodicalIF":2.6,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141869828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"How upper secondary students figure chemistry","authors":"Jonas Niemann, Henriette Holmegaard and Lene Møller Madsen","doi":"10.1039/D4RP00145A","DOIUrl":"10.1039/D4RP00145A","url":null,"abstract":"<p >The formation of chemistry identities among students is closely linked to the norms and practices prevalent in their chemistry learning environments. However, these norms may not be equally accessible or aligned with formal assessment criteria, leading to disparities for students in cultivating a positive chemistry identity. This study investigates how students conceptualise chemistry and the opportunities it affords for identity formation. Drawing upon the theoretical frameworks of figured worlds and science identity, data were collected from 45 upper secondary school students across three Danish schools through classroom observations and focus groups. The findings reveal that students perceive the laboratory and classroom settings as distinct in purpose, nature, and relevance, with varying degrees of celebration for enacted performance in each. While work in and related to the laboratory is highly valued by both students and teachers, individual enacted performance in the classroom is often equated with proficiency in chemistry. However, implicit norms for example governing the division of labour in laboratories indicate an inequitable distribution of tasks and underscore the need for a more equitable approach to identity formation in chemistry education.</p>","PeriodicalId":69,"journal":{"name":"Chemistry Education Research and Practice","volume":" 4","pages":" 1289-1310"},"PeriodicalIF":2.6,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flipping the script in organic reaction mechanism instruction: using generative pedagogies instead of lecture to improve learning outcomes","authors":"Connor Haindfield, William Cerbin, Douglas Baumann and Heather Schenck","doi":"10.1039/D3RP00322A","DOIUrl":"10.1039/D3RP00322A","url":null,"abstract":"<p >Two generative approaches to reaction mechanism instruction for novice students were compared to lecture instruction. In both approaches, students were coached to propose selected reaction mechanisms based on prior knowledge. New instructional methods were correlated with increased skill in representations of electron movements and other gains. Students who saw a larger amount of new pedagogy showed stronger abilities to propose mechanisms for unfamiliar reactions. In the group that saw a larger amount of new pedagogy, first-generation college student (FGS) grades rose to match non-FGS grades. Learning gains were interpreted with respect to cognitive load theory, flagging high element interactivity as a likely obstacle for novice students. Problem solving during mechanism instruction for novice students offers the potential to improve learning outcomes.</p>","PeriodicalId":69,"journal":{"name":"Chemistry Education Research and Practice","volume":" 4","pages":" 1311-1325"},"PeriodicalIF":2.6,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141744177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recognition experiences of women of color in chemistry: an intersectional study","authors":"Norda S. Stephenson and Ursula A. Abelsen","doi":"10.1039/D3RP00278K","DOIUrl":"10.1039/D3RP00278K","url":null,"abstract":"<p >Much research on women of color in STEM has treated women of color as a collective, giving little attention to the nuanced differences in the experiences of the women within this larger group. Research on women of color in STEM has also given insufficient attention to disciplinary differences, and has often applied unidimensional, rather than intersectional approaches, to examining the experiences of these women. This study takes a nuanced approach to examining the recognition experiences of four undergraduate women of color in chemistry, and how those experiences are shaped by the intersection of their multiple marginalized identities, using an intersectional lens. Interpretive phenomenological analysis is used to center the women's voices and focus on capturing both the convergences and divergences in their experiences. Our findings illustrate the value of using an intersectional approach, and provide explicit examples of how recognition, especially negative recognition, manifests itself in these women's experiences. The findings have implications for how institutions and disciplines can support women of color to persist in science disciplines, as well as implications for research.</p>","PeriodicalId":69,"journal":{"name":"Chemistry Education Research and Practice","volume":" 4","pages":" 1229-1250"},"PeriodicalIF":2.6,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141718241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The complexity of chemistry mindset beliefs: a multiple case study approach†","authors":"Deborah L. Santos and Suazette Reid Mooring","doi":"10.1039/D4RP00068D","DOIUrl":"10.1039/D4RP00068D","url":null,"abstract":"<p >Mindset is a construct of interest for challenging learning environments, as science courses often are, in that, it has implications for behavioral responses to academic challenges. Previous work examining mindset in science learning contexts has been primarily quantitative in nature, limiting the theoretical basis for mindset perspectives specific to science domains. A few studies in physics education research have revealed domain-specific complexities applying to the mindset construct that suggest a need to explore undergraduate perspectives on mindset within each science domain. Here we present a multiple case study examining chemistry-specific mindset beliefs of students enrolled in general and organic chemistry lecture courses. A between-case analysis is used to describe six unique perspectives on chemistry mindset beliefs. This analysis revealed that students’ beliefs about their own ability to improve in chemistry intelligence or regarding chemistry-specific cognitive abilities did not consistently match their views on the potential for change for other students in chemistry. The nature of the abilities themselves (whether they were naturally occurring or developed with effort), and the presence of a natural inclination toward chemistry learning were observed to play a role in students’ perspectives. The findings from this analysis are used to propose a more complex model for chemistry-specific mindset beliefs to inform future work.</p>","PeriodicalId":69,"journal":{"name":"Chemistry Education Research and Practice","volume":" 4","pages":" 1210-1228"},"PeriodicalIF":2.6,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141575908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of problem-solving skills supported by metacognitive scaffolding: insights from students’ written work†","authors":"Kimberly Vo, Mahbub Sarkar, Paul J. White and Elizabeth Yuriev","doi":"10.1039/D3RP00284E","DOIUrl":"10.1039/D3RP00284E","url":null,"abstract":"<p >Despite problem solving being a core skill in chemistry, students often struggle to solve chemistry problems. This difficulty may arise from students trying to solve problems through memorising algorithms. Goldilocks Help serves as a problem-solving scaffold that supports students through structured problem solving and its elements, such as planning and evaluation. In this study, we investigated how first-year chemistry students solved problems, when taught with Goldilocks Help, and whether their problem-solving success and approaches changed over the course of one semester. The data comprised of student written problem-solving work, and was analysed using frequency analysis and grouped based on the problem-solving success and the extent of the demonstrated problem-solving elements. Throughout the course of semester, students exhibited increasingly consistent demonstration of structured problem solving. Nonetheless, they encountered difficulties in fully demonstrating such aspects of problem solving as understanding and evaluating concepts, which demand critical thinking and a firm grasp of chemistry principles. Overall, the study indicated progress in successful and structured problem solving, with a growing proportion of students demonstrating an exploratory approach as time progressed. These findings imply the need for incorporation of metacognitive problem-solving scaffolding, exposure to expert solutions, reflective assignments, and rubric-based feedback into wide teaching practice. Further research is required to extend the exploration of the effectiveness of metacognitive scaffolding, in particular <em>via</em> think-aloud interviews, which should help identify productive and unproductive uses of the problem-solving elements.</p>","PeriodicalId":69,"journal":{"name":"Chemistry Education Research and Practice","volume":" 4","pages":" 1197-1209"},"PeriodicalIF":2.6,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141578028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fostering inclusive learning: customized kits in chemistry education and their influence on self-efficacy, attitudes and achievements","authors":"Enas Easa and Ron Blonder","doi":"10.1039/D4RP00144C","DOIUrl":"10.1039/D4RP00144C","url":null,"abstract":"<p >Inclusion of a diverse group of students, both regular learners and learners with special needs in chemistry classrooms is an important goal of chemistry educators. However, alternative conceptions in chemistry among high-school students can be a barrier for completing the learning process in the classroom, especially in a heterogeneous class. This study aimed to examine differentiated instruction (DI) in a chemistry classroom. We evaluated how customized pedagogical kits (CPKs) for DI, which aim to overcome alternative conceptions found during chemistry instruction, affected students and teachers. This paper presents the findings of a mixed-method study that was conducted with 9 high-school chemistry teachers, and 551 chemistry students. We used a pre-post questionnaire to investigate the impact of CPKs on teachers’ and students’ self-efficacy beliefs and attitudes towards chemistry and differentiated instruction, in addition to students’ achievements. The findings indicated the significantly higher averages of self-efficacy beliefs and attitudes towards DI in chemistry among teachers and high-school students, in addition to the significantly higher performance of students in chemistry tasks after implementing CPKs in classrooms. Being aware of the limitations of DI, we discussed customized pedagogical kits as a means that can support better inclusion in chemistry education.</p>","PeriodicalId":69,"journal":{"name":"Chemistry Education Research and Practice","volume":" 4","pages":" 1175-1196"},"PeriodicalIF":2.6,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141575909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing high school students’ chemical thinking using an essential questions-perspective framework†","authors":"Ming Chi, Changlong Zheng and Peng He","doi":"10.1039/D4RP00106K","DOIUrl":"10.1039/D4RP00106K","url":null,"abstract":"<p >Chemical thinking is widely acknowledged as a core competency that students should develop in the context of school chemistry. This study aims to develop a measurement instrument to assess students’ chemical thinking. We employed the Essential Questions-Perspectives (EQ-P) framework and Structure of Observed Learning Outcome (SOLO) classification to construct a hypothetical model of chemical thinking. This model comprises three aspects and each aspect includes five cognitive levels to assess students’ chemical thinking. Accordingly, we developed an initial instrument consisting of 27 items in multiple formats, including multiple-choice, two-tier diagnostic, and open-ended questions. We applied the partial credit Rasch model to establish the validity and reliability of measures for the final instrument. Following the process of pilot test, revision, and field test, we finalized the instrument with a refined 20-item instrument. Two hundred and twenty-one Chinese high school students (Grade 12) participated in the pilot and field tests. The results demonstrate that the final instrument effectively produces reliable and valid measures of students’ chemical thinking. Furthermore, the empirical results align well with the hypothetical model, suggesting that the SOLO classification can effectively distinguish the levels of proficiency in students’ chemical thinking.</p>","PeriodicalId":69,"journal":{"name":"Chemistry Education Research and Practice","volume":" 4","pages":" 1143-1158"},"PeriodicalIF":2.6,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Why do we assess students? investigating general chemistry instructors’ conceptions of assessment purposes and their relationships to assessment practices","authors":"Lu Shi, Ying Wang, Jherian K. Mitchell-Jones and Marilyne Stains","doi":"10.1039/D4RP00147H","DOIUrl":"10.1039/D4RP00147H","url":null,"abstract":"<p >Assessment plays a critical role in instruction and curriculum. Existing literature on instructors’ assessment practices and related factors has been intensively focused on primary and secondary education. This study extended the contexts of previous literature to post-secondary chemistry education by exploring general chemistry instructors’ conceptions of assessment purposes and their assessment practices. Semi-structured interviews were conducted with 19 general chemistry instructors from 14 institutions across the East Coast region of the United States of America. The results demonstrate that instructors predominately perceive the purpose of Assessment of Learning (<em>i.e.</em>, evaluation of student performance) with only few of them mentioning purposes of Assessment for Learning (<em>i.e.</em>, assessment provides actionable feedback for both the instructors and the students) and Assessment as Learning (<em>i.e.</em>, assessment promotes self-regulation). The use of various assessment practices is related to the number of assessment purposes instructors recognize. In addition, the study demonstrates that instructors perceive their assessment practices to be influenced by academic culture and departmental norms. This nuanced understanding can guide practical and research efforts to improve chemistry instructors’ engagement in assessment reforms.</p>","PeriodicalId":69,"journal":{"name":"Chemistry Education Research and Practice","volume":" 4","pages":" 1159-1174"},"PeriodicalIF":2.6,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"STEM-PT Traveler, a game-based approach for learning elements of the periodic table: an approach for enhancing secondary school students’ motivation for learning chemistry","authors":"Mohammad Najib Mohammed Naaim and Mageswary Karpudewan","doi":"10.1039/D4RP00032C","DOIUrl":"10.1039/D4RP00032C","url":null,"abstract":"<p >The COVID-19 pandemic has significantly impacted students' motivation for learning. As students return to schools in the post-pandemic era, their motivation for learning continues to deteriorate due to challenges in adapting to the new educational norms. This study aimed to enhance the motivation of secondary school students towards learning chemistry, particularly during the period when their motivation has tended to be low upon returning to regular schooling after the pandemic. To achieve this objective, the researchers developed and implemented a self-designed game-based learning approach called STEM-PT Traveler during lessons focused on the periodic table. STEM-PT Traveler incorporated elements of enjoyable learning and play, introducing an interdisciplinary perspective to periodic table lessons. The effectiveness of STEM-PT Traveler in improving motivation was compared to an alternative student-centred, non-game-based learning approach using an explanatory mixed-method design. Two intact classes from a public secondary school were randomly assigned to two groups—one group utilized the game-based learning approach (<em>N</em> = 45), while the other group employed the non-game-based approach (<em>N</em> = 46). The multivariate analysis of covariance (MANCOVA) findings from pre-test and post-test questionnaires administered before and after treatment revealed significant differences in overall motivation and in the subscales of intrinsic motivation, career motivation, and self-efficacy. Non-significant differences were observed for grade motivation and self-determination. Qualitative interviews conducted with both groups after the treatment provided additional insights into the questionnaire outcomes. Specifically, during the interviews, students highlighted that the game facilitated engagement with the periodic table elements due to their intrinsic value. Additionally, the game provided a career perspective and instilled a belief that excelling in chemistry is instrumental. This study suggests that a game-based approach is an effective alternative to the predominantly used teacher-centred teaching of the periodic table and advocates for the integration of interdisciplinary perspectives into lessons on the Periodic Table.</p>","PeriodicalId":69,"journal":{"name":"Chemistry Education Research and Practice","volume":" 4","pages":" 1251-1267"},"PeriodicalIF":2.6,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}