| Literature DB >> 21885824 |
Melinda Harrison1, David Dunbar, Lisa Ratmansky, Kimberly Boyd, David Lopatto.
Abstract
Our study, focused on classroom-based research at the introductory level and using the Phage Genomics course as the model, shows evidence that first-year students doing research learn the process of science as well as how scientists practice science. A preliminary but notable outcome of our work, which is based on a small sample, is the change in student interest in considering different career choices such as graduate education and science in general. This is particularly notable, as previous research has described research internships as clarifying or confirming rather than changing undergraduates' decisions to pursue graduate education. We hypothesize that our results differ from previous studies of the impact of engaging in research because the students in our study are still in the early stages of their undergraduate careers. Our work builds upon the classroom-based research movement and should be viewed as encouraging to the Vision and Change in Undergraduate Biology Education movement advocated by the American Association for the Advancement of Science, the National Science Foundation, and other undergraduate education stakeholders.Entities:
Mesh:
Year: 2011 PMID: 21885824 PMCID: PMC3164567 DOI: 10.1187/cbe.10-12-0151
Source DB: PubMed Journal: CBE Life Sci Educ ISSN: 1931-7913 Impact factor: 3.325
Phage Genomics course logistics
| Week | Lecture topic | Lab activity | Total hours (in and out of the classroom) per lab activity |
|---|---|---|---|
| A. Fall semester | |||
| 1 | — | Course and project introduction | 5 |
| 2 | — | Isolate phage from soil and identify pure phage species | 15–20 |
| 3 | — | ||
| 4 | — | ||
| 5 | — | Continued phage purification | 15–20 |
| 6 | — | ||
| 7 | — | ||
| 8 | — | Isolate quality genomic DNA and perform enzymatic digests | 15–20 |
| 9 | — | ||
| 10 | — | ||
| 11 | — | Determine phage morphology via electron microscopy | 5–10 |
| 12 | — | ||
| 13 | — | Student determination of phage characteristics and oral presentation | 5–10 |
| 14 | — | ||
| 15 | — | Student naming and archiving of phage sample | 5 |
| B. Spring semester | |||
| 1 | Biochemistry | Annotate phage genome | 15 |
| 2 | |||
| 3 | Structure and function of molecules | ||
| 4 | |||
| 5 | Cell structure and function | ||
| 6 | |||
| 7 | Cancer case study | Conduct comparative genomic analysis | 15 |
| 8 | Exam | ||
| 9 | Biological membranes and transport mechanisms | ||
| 10 | Diabetes case study | ||
| 11 | Cellular metabolism | ||
| 12 | Principles of evolution | ||
| 13 | Ecology | Preparation of oral presentation and poster Presentation at Cabrini College | 7.5 |
| 14 | |||
| 15 | Exam | Undergraduate Arts, Scholarship and Research Symposium | |
Figure 1.Student pre- and postsurvey attitude results for 13 Phage Genomics students. The items asked students how much they found the course content stimulating, how interested they are in science, how interested they are in research, in attending graduate school, in attending medical school, how much they enjoy making decisions in their work, and how the course resulted in their thinking in new ways. The bars represent the mean response. The error lines represent one standard error above and below the mean. Analysis with independent sample t tests showed significant increases in means from pre- to posttests (p < 0.05, directional hypothesis). When re-analyzed with the nonparametric Mann-Whitney test, all tests were significant except for Item 1, which measured how stimulating the students found the course content.
Coded themes for student impressions on scientific attitudes with selected student quotes
| Theme | Representative student quotations |
|---|---|
| Five of 12 students indicated the Phage Genomics course allowed them to think differently about considering graduate school education or other career options. | “Being on the same level as your teachers, and working with your teachers, and seeing that they had struggles too, along with you, really gives you the confidence to move on to the graduate level.” |
| “The course made me interested in becoming an Environmental Science Minor in addition to my Business Major.”“I honestly think the course is a lot of what graduate school or a job is like, especially because we had a number of setbacks like contaminations. That's real science.” | |
| Four of 12 students felt the Phage Genomics course influenced their decision to pursue graduate-level education instead of or in addition to a medical school education. | “Since taking the course, I’m actually considering switching my major from Pre-med to Biotechnology, and then going to grad school for forensic science or virology.” |
| “If I don't get into Medical School, I want to get my PhD in Cell and Molecular Biology and become a college professor.” | |
| “The course really did open my eyes to see the intersection between Medical School and a Doctorate program, where I was just at first, just narrow-minded, wanted to do the doctor route. But now, I have been looking at MD, PhD programs.” | |
| Eight of 12 students indicated the course was more beneficial for first-year students than if the course was offered later in their undergraduate education. | “In regards to freshmen, I totally agree with freshmen taking the course. I mean, I think it's a great class for freshmen to be exposed to real research experiences.” |
| “Most Introductory Biology courses are a repeat of labs you did in high school, unlike the phage course. I don't want to come to college and do the same things I was doing in high school because there's nothing new in that.” | |
| “Taking the course as freshman got me excited about my major more so than doing canned experiments typical of Introductory Biology labs.” | |
| Five of 12 students valued the “realness” of the course. | “The setbacks in lab gave us more perspective and respect for individuals that do original research.” |
| “It's cool to do something and know that you are actually doing it for a purpose.” | |
| “It's good to know that there are other people who are out there doing the same thing you are doing and they are interested in the same type of research that you are interested in. So, that's pretty cool.” | |
| Ten of 12 students enjoyed not knowing the outcome of an experiment as opposed to “cookbook” labs. | “In chemistry lab when you do the exercise you already know what the outcome is going to be, and that's what makes it boring, but with the Phage Genomics lab you are not sure what the outcome is going to be.” |
| Nine of 12 students gained a sophisticated understanding of the research process and what it means to be part of a community of scientists. | “The setbacks in lab gave us more perspective and respect for individuals that do original research.” |
| “I now understand that anything can go wrong in a biology lab.” | |
| “I think the course is almost like a big phage family with all the schools involved because they are all working for the same goals.” | |
| Seven of 12 students enjoyed the hands-on aspects of the course. | “We kind of just jumped right into the lab experiments from the beginning of the semester and I thought that was really cool.” |
| “I would tell students to take the course because of all the hands-on activity the first year.” | |
| Eight of 12 students valued the ability to be able to learn from their mistakes. | “A good thing about the lab was if you made a mistake you would be able to learn from it and then go back and repeat the experiment.” |
| “I think the most exciting part of the course for me was after I failed really miserably in isolating genomic DNA and had to repeat the experiment I was able to isolate lots of it and the professors were so excited.” |