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Full-Text Articles in Education

A Historical Investigation Into Item Formats Of Acs Exams And Their Relationships To Science Practices, Alexandra Brandriet, Jessica J. Reed, Thomas Holme Jan 2015

A Historical Investigation Into Item Formats Of Acs Exams And Their Relationships To Science Practices, Alexandra Brandriet, Jessica J. Reed, Thomas Holme

Chemistry Publications

The release of the NRC Framework for K-12 Science Education and the Next Generation Science Standards has important implications for classroom teaching and assessment. Of particular interest is the implementation of science practices in the chemistry classroom, and the definitions established by the NRC makes these objectives much more tangible. However, this still may leave some wondering about how to begin making these changes. Mid-twentieth century chemical educators and pioneers of the first ACS exams advocated for testing science thinking and skills as early as the 1930s, and this necessitates a discussion about how early ACS exams measured these attributes ...


Defining Conceptual Understanding In General Chemistry, Thomas Holme, Cynthia J. Luxford, Alexandra Brandriet Jan 2015

Defining Conceptual Understanding In General Chemistry, Thomas Holme, Cynthia J. Luxford, Alexandra Brandriet

Chemistry Publications

Among the many possible goals that instructors have for students in general chemistry, the idea that they will better understand the conceptual underpinnings of the science is certainly important. Nonetheless, identifying with clarity what exemplifies student success at achieving this goal is hindered by the challenge of clearly articulating what conceptual understanding entails. While this may be a case of “we know it when we see it”, the design of assessments ultimately requires a specific definition of conceptual understanding. Without such a specific definition of the construct, it may be readily argued that a proposed measure does not provide evidence ...


Methods For Addressing Missing Data With Applications From Acs Exams, Alexandra Brandriet, Thomas Holme Jan 2015

Methods For Addressing Missing Data With Applications From Acs Exams, Alexandra Brandriet, Thomas Holme

Chemistry Publications

As part of the ACS Examinations Institute (ACS-EI) national norming process, student performance data sets are collected from professors at colleges and universities from around the United States. Because the data sets are collected on a volunteer basis, the ACS-EI often receives data sets with only students’ total scores and without the students’ responses to individual exam questions. Nonetheless, several national norming statistics require students’ item responses. This data return leads to missing data and potentially biased results when inferences are made based on that data set. This work uses student performance data sets from ACS-EI to consider how methods ...


Designing Chemistry Practice Exams For Enhanced Benefits. An Instrument For Comparing Performance And Mental Effort Measures, Kristen L. Murphy, Thomas Holme Jan 2015

Designing Chemistry Practice Exams For Enhanced Benefits. An Instrument For Comparing Performance And Mental Effort Measures, Kristen L. Murphy, Thomas Holme

Chemistry Publications

The emergence of students using cell phones and particularly the photographic capabilities of smartphones to cheat on exams is noted. The specific threat this form of academic misconduct poses to the ACS Examinations Institute is addressed in particular.


Biochemistry Instructors’ Views Toward Developing And Assessing Visual Literacy In Their Courses, Kimberly J. Linenberger, Thomas Holme Jan 2015

Biochemistry Instructors’ Views Toward Developing And Assessing Visual Literacy In Their Courses, Kimberly J. Linenberger, Thomas Holme

Chemistry Publications

Biochemistry instructors are inundated with various representations from which to choose to depict biochemical phenomena. Because of the immense amount of visual know-how needed to be an expert biochemist in the 21st century, there have been calls for instructors to develop biochemistry students’ visual literacy. However, visual literacy has multiple aspects, and determining which area to develop can be quite daunting. Therefore, the goals of this study were to determine what visual literacy skills biochemistry instructors deem to be most important and how instructors develop and assess visual literacy skills in their biochemistry courses. In order to address these goals ...


Building A Database For The Historical Analysis Of The General Chemistry Curriculum Using Acs General Chemistry Exams As Artifacts, Cynthia J. Luxford, Kimberly J. Linenberger, Jeffrey R. Raker, John Y. Baluyut, Jessica J. Reed, Chamila De Silva, Thomas Holme Jan 2015

Building A Database For The Historical Analysis Of The General Chemistry Curriculum Using Acs General Chemistry Exams As Artifacts, Cynthia J. Luxford, Kimberly J. Linenberger, Jeffrey R. Raker, John Y. Baluyut, Jessica J. Reed, Chamila De Silva, Thomas Holme

Chemistry Publications

As a discipline, chemistry enjoys a unique position. While many academic areas prepared “cooperative examinations” in the 1930s, only chemistry maintained the activity within what has become the ACS Examinations Institute. As a result, the long-term existence of community-built, norm-referenced, standardized exams provides a historical artifact about the nature of content coverage in courses that stretches over decades. This work reports efforts to capture information and formulate it into a database about general chemistry content coverage over the past 20 years. Roughly 2000 items have been characterized in several ways, including (i) content, using an Anchoring Concepts Content Map; (ii ...


Updating The General Chemistry Anchoring Concepts Content Map, Thomas Holme, Cynthia Luxford, Kristen Murphy Jan 2015

Updating The General Chemistry Anchoring Concepts Content Map, Thomas Holme, Cynthia Luxford, Kristen Murphy

Chemistry Publications

The previously published Anchoring Concepts Content Map (ACCM) from the ACS Examinations Institute is updated. Through the development process of the ACCM for other subdisciplines, changes have been made at the top two levels, and these changes need to be reflected in the previously published maps. In addition, a large-scale project to align test items from ACS Exams over the past 20 years revealed specific omissions in the initially published General Chemistry ACCM.