Grinnell College NSF-AIRE Annual Reports


#2 September, 2000


NSF-AIRE teacher/scholars are appointed in two departments to serve as a bridge between them in directing research students, teaching courses and developing new curricula. Each is mentored by faculty in both departments.

 

Dr. Christina Caruso
Dr. Caruso has appointments in the Biology and Mathematics Departments. Dr. Caruso's research in plant evolutionary ecology focuses on understanding how environmental variation influences adaptive evolution in natural populations, using plant-pollinator systems as models. In collaboration with Grinnell undergraduates Brook Peterson and Caroline Ridley, she is engaged in a multi-year effort to estimate phenotypic selection and quantitative genetic parameters for floral traits of native lobelias growing in contrasting environments. These data will allow her to test predictions of the effect of selection on the maintenance of genetic variation, as well as make environment-specific estimates of evolutionary change. Such estimates are rarely made, but are critical for accurately predicting the course of adaptive evolution in species that grow in contrasting local environments. Dr. Caruso recently presented the preliminary results from this project at the annual meeting of the Ecological Society America. In collaboration with Grinnell undergraduates Kate Ostergren and Davin Remington, she is using milkweed as a model system to determine if the evolution of floral traits via male vs. female function varies among pollen- vs. resource-limited environments, as predicted by sexual selection theory. Although floral traits of hermaphroditic plants are thought to be selected primarily via male function, my research may suggest that sex-specific selection varies with the environment. The results from both of these studies are being prepared for publication in the journals Ecology and Evolution.

Dr. Caruso's teaching at Grinnell focuses on (1) integrating the principles of statistics and experimental design into the biology curriciulum and (2) introducing biological examples to statistics classes. In the course of co-teaching Prairie Restoration during Fall 1999, she developed a series of documents to teach the basics of experimental design and statistics to introductory biology students. In collaboration with biology faculty at Grinnell, she revised these documents during Spring 2000 for inclusion in Investigations: A Handbook for Biology and Chemistry Majors (available online). During Spring 2000, Dr. Caruso also wrote a series of lab exercises based on real biological data for the math class Applied Statistics. These labs were meant to appeal to biology majors, who make up more than half of the students in Applied Statistics. In addition, Dr. Caruso guest-lectured in Applied Statistics on analysis of variance (ANOVA), a common statistical technique used in biological studies.

Dr. Nancy Remple-Clower
Dr. Rempel-Clower has appointments in the Biology and Psychology Departments. Dr. Rempel-Clower's research investigates the role of the prefrontal cortex in emotion and memory in the rat. In humans, damage to prefrontal cortex can cause dramatic changes in memory and in emotional behavior. Depending on the location of damage, the behavioral effects can vary widely, suggesting the prefrontal cortex in humans is a functionally heterogeneous region. Although much less extensive than in humans, prefrontal cortex of the rat also appears to be a functionally heterogeneous region that plays a role in memory and emotion. The contributions to memory and emotional behavior of specific parts of the rat prefrontal cortex are currently poorly understood. Dr. Rempel-Clower uses behavioral techniques to assess changes in various types of memory, particularly emotional memory, after damage to specific subregions of the rat prefrontal cortex. In addition, she employs immunohistochemical techniques to help delineate boundaries of subregions of rat prefrontal cortex. She mentored one student over the summer in carrying out an independent research project, and is continuing to guide his work in a second project for the fall semester. Over the next year, she plans to involve several more students in her research program.

Nancy Rempel-Clower taught Neurobiology (BIO 363) with Professor Clark Lindgren in the spring semester and is currently teaching Physiological Psychology (PSYCH 246) with Professor Ken Short. These courses are essentially co-taught, with both instructors present for all lectures and laboratory sessions. Dr. Rempel-Clower gives half the lectures for both courses. In Neurobiology, students spend the first part of the semester in the laboratory learning techniques and concepts. Then they have the opportunity to apply their skills as they work in groups of 2 or 3 to design and carry out a research project over the last few weeks of the semester. Finally, laboratory groups write research papers describing their experimental findings, which are published in a new course journal, Pioneering Neuroscience, which is available on the web. Physiological Psychology does not have a laboratory component. Research is integrated in this course through the discussion of significant research papers that are assigned as reading, and, where feasible, through demonstrations in the classroom.

Dr. Craig Tucker
Dr. Craig Tucker had appointments in the Biology and Chemistry Departments. Dr. Tucker resigned from his postdoctoral appointment in biological chemistry on July 1 in order to pursue a non-academic career centered on influencing public policy on environmental issues. Dr. Tucker's activities were designed to be strongly focused on his research during the first year of his appointment and then on teaching during the second year. Nevertheless, he participated in Biology Department discussions on curricular development and in a weekend workshop the Biology and Chemistry Departments had to develop a handbook for their majors. Dr. Tucker presented a two-week unit describing the molecular basis of morphogenesis, a topic closely related to his dissertation research, in a Molecular Biology course. He also directed a research project carried out by a biology student Kendra Young during spring semester '00. They isolated DNA fragments linked to an ADP1 gene that is DNA damage-inducible. Dr. Tucker helped with sequence analysis of this locus. During his time here, he was also a helpful resource to several (6) students doing research projects with Professor Gregg-Jolly. Their research focused on characterizing a DNA repair mutant, isolating genes involved in cell division and DNA repair and understanding the regulation of DNA-damage inducible genes.

Dr. Earle Adams
Dr. Earle Adams is joining the Chemistry and Biology Departments in the Fall of 2000 for a two year teacher/scholar postdoctoral appointment. Since this term will extend beyond the NSF-AIRE funding period, Grinnell College will assume financial responsibility for the appointment at the end of the grant. Dr. Adams background is at the interface of biology and chemistry with an emphasis on physical methods. His undergraduate and graduate training were in chemistry departments, with specialization in NMR structure determination of biological molecules. His current postdoctoral work at Yale University is in the School of Medicine where he has developed NMR techniques for studying in vitro and in vivo metabolites of drugs. His interdisciplinary training provides the chemistry department with expertise in current biophysical research at the time that they are participating in course development for a new biological chemistry major.

Dr. Adams will work with Professor Elaine Marzluff, a physical chemist. Professor Marzluff's research uses mass spectrometry to probe protein structure and interactions. This is a complementary technique to NMR, so Dr. Adams will participate in these projects. In addition, the Chemistry Department has recently installed a new 400 MHz Bruker NMR. Dr. Adams will bring new NMR methodology to Grinnell College in his work with students on protein structure.

Dr. Adams will participate in course development for Grinnell's new biological chemistry major, especially a new "Introduction to Biological Chemistry" course. Physical chemistry is a required course for the Biological Chemistry major and Dr. Adams will work with Professor Marzluff to develop new modules and laboratories to reflect the increasingly biological interests of students in that course. He will also be involved in teaching the course and laboratories. In addition, he will participate in our non-majors chemistry course and have the opportunity to sit in on biology and chemistry courses at Grinnell. It is Dr. Adams goal to teach chemistry and biological sciences at the undergraduate level so this teaching and research experience, in addition to providing Grinnell with new expertise, should give him a good foundation t from which to work.

Science Faculty Development Summer Seminars

The NSF-AIRE grant sponsored a wide variety of short workshops during the year. Most of these workshops were for a small number of faculty to learn about a particular tool that could be used to integrate research into teaching, but one was a discussion by all the faculty and staff of the Biology and Chemistry Departments to work out what should be included in a joint document on lab and research techniques in those disciplines. A total of 14 faculty members from all departments of the Science Division took advantage of these workshops. The following are descriptions of the NSF-AIRE workshops for the academic year 1999-2000.

Development of a Handbook for Biology and Chemistry Courses
Because of the close interaction between courses required for the Biology, Chemistry and Biological Chemistry majors, we recognize the need to speak with one voice about our approaches to doing and teaching science. In this workshop, faculty and staff from the Biology and Chemistry Departments will break up into four groups to work together to formulate drafts of the four major sections of a proposed Handbook to be given to all our students in their first courses. The working groups will be (a) Navigating Courses in Biology and Chemistry ­ the curricula and everyday keys to success; (b) Undertaking Investigations ­ types of experimental design, analysis and data presentation, and keeping a research notebook; (c) Communicating the Results of Scientific Investigations ­ preparing papers, posters and oral presentations; and (d) A Primer of Statistical Analysis.
Presentation Tools and Techniques
Several types of presentation software can be employed to assist researchers in communicating findings clearly and consistently in an oral format as well as in poster sessions and on the Internet. We will focus on MS PowerPoint as a tool to accomplish these ends. Topics covered will include, creating presentations collaboratively, template creation, and creating flexible presentations. We will also have an open discussion on teaching students how to use PowerPoint to present research findings.

Research and collaboration tools at Grinnell I: Documents and collaboration
This workshop is designed for those who already have a basic understanding of Microsoft Word who wish to take advantage of the more advanced layout, editing, and collaborative features to create documents. This will be a participant driven workshop where faculty can focus on functions that interest them in a research environment. Topics that may be covered include annotation, file sharing and collaborative editing, formatting lists, inserting and creating graphics, and inserting mathematical formulae.

Research and collaboration tools at Grinnell II: Servers, discussions, email
The campus offers a variety of ways in which students, faculty and staff can electronically collaborate and share information. These include shared server spaces, course web spaces, online discussion forums, email, listserves and NT user groups. Participants will learn what these tools are, and how to use them in teaching and research programs. Participants can share ideas and experience to learn about how to use these tools and how to adapt them to fit their pedagogical needs.

Chemistry Drawing Packages
We will examine and evaluate the Chemistry drawing package ISIS Draw for faculty, staff and student use. We will focus on its potential as a cross platform program that can be deployed on campus easily and inexpensively. We will determine what documentation needs to be developed for 1st and 2nd year students to use ISIS Draw.

Advanced web techniques
This workshop is designed for those who already have a basic understanding of how to make web pages who wish to enhance or redesign their course website. Participants will work together with the science division's technical secretary and multimedia instructional specialist to examine the goals of their websites and how the layout and design can be adjusted or content be included to serve your educational needs better. Topics covered will include frames, image maps, file types, CGIs, templates and rapid development techniques.

Integrating the 400 MHz NMR Spectrometer into Teaching and Research
The Chemistry Department offers a workshop to familiarize science faculty with the use and new experimental methods of the Bruker 400MHz NMR spectrometer. Three general meetings (one to two hours) followed by individually arranged two-hour hands-on training sessions will be held. The first session will familiarize participants with the computer system and the automated operation of the spectrometer. The second session will deal with the manual acquisition of data. The third session will be dedicated to 2-D NMR.

Research and Student Learning Study

We proposed mounting a three-year study of our student/faculty research collaborations in an effort to describe a model of our research program and its effects on student learning. We targeted summer research for study. In the summer of 2000 we completed our second year of study. Professor David Lopatto supervised three undergraduate research assistants, who replicated and extended the progress reported in the previous annual report. Fifty-nine summer research students were interviewed during the summer. In addition to information about student expectations, background and goals, interviewers asked the respondents to answer 14 questions regarding the actual tasks they undertook during their projects. Task questions included "Are you comparing an experimental group with a control group?", "Does your project require you to put together something or create some new product?" and "Do you study features of nature?". The pattern of answers (yes/no) was compared across students. High concordance rates were found within disciplines, as expected, but across some disciplines as well, such as for those projects that involved field work or primary work on a computer. Further analysis will examine which projects cluster on these 14 questions, and how student responses regarding their projects compare to their faculty mentors' responses on the same questions. (view Lopatto's 1999 presentation)

Dissemination

The research and student learning component results have also been a factor in dissemination of AIRE activities. Professor Lopatto presented the results of the first year of research to the science division faculty in December, 1999 and made the presentation available on the web page . Professor Lopatto also presented assessment research at the 2000 meeting of the Council on Undergraduate Research meeting in Wooster, Ohio in June, 2000 . Professor Leslie Lyons presented an invited talk and proceedings article entitled "Fullerenes in Undergraduate Courses at Grinnell" at a meeting of the Electrochemical Society in Toronto in May, 2000. This talk focused on how a research topic can be integrated into several different chemistry courses.

Next Year's Programatic Activities

During the second year of the grant, the major focus of curricular development was our introductory courses. In the third year that focus shifts to the second-year courses, especially a new course "Introduction to Biological Chemistry," and to advanced level courses in neuroscience and biological chemistry. The Research and Student Learning study begun by Professor will be continued. The scope of this study will be greatly expanded with substantial additional funding from the Howard Hughes Medical Institutes and the National Science Foundation. A major grant from the NSF allows establishment of a long-term collaboration among Grinnell College, Hope College, Wellesley College, and Harvey Mudd College to study student research and assess its effectiveness and contribution to the undergraduate educational experience.

AIRE Project Administration

Grinnell College's NSF-AIRE project is under the direction of Bruce A. Voyles, Patricia Armstrong Johnson Professor of Biological Chemistry, Professor of Biology, and Chair of the Science Division.



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