Geological time, biological events and the learning transfer problem
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Comprehension of geologic time does not come easily, especially for students who are studying the earth sciences for the first time. This project investigated the potential success of two teaching interventions that were designed to help non-science majors enrolled in an introductory geology class gain a richer conceptual understanding of the geologic time scale. Our research centered on the results of those interventions since we hypothesized that students who correctly answered exam questions on relative geologic time early in the semester would be able to respond with equal facility to exam questions at the end of the semester that asked them to apply relative geologic time to associated biologic events.
The instructor of the course began this study by using the Decoding the Disciplines model (Pace & Middendorf, 1998). During the first step of the model, the instructor identified the place where a majority of students in previous classes had the greatest difficulty; that is, in addressing the relative geologic time scale. Next, the instructor articulated the mental moves an expert geologist makes when solving problems using the geological time scale. During lecture the instructor modeled those very same mental tasks for students. Students were then given the opportunity to practice those mental tasks by creating their own personal timeline. Later in the course students completed the second intervention, a categorization grid that also functioned as a classroom assessment of their learning. Students were given exams after both interventions were completed.
Results from the first and second interventions indicated that students were able to understand the conceptual framework of the relative geological time scale. On an exam administered after both interventions were completed, 66% of the students answered correctly the questions about relative geologic time, an indication that they had gained conceptual knowledge of the subject. In contrast, only 36% of students answered correctly the exam questions at the end of the semester that focused on relative geologic time with associated biologic events. Pearson Chi-Square tests with P<0.05 were used to test our hypothesis. Statistically significant results at P=0.00 were attained for all tests, indicating the hypothesis can be rejected.
We conclude that a second, more prevalent, underlying problem exists for non-science majors, one that Thorndike and Woodworth (1901), Byrnes (1996), Bransford, Brown, and Cocking (2000) and Bransford and Schwartz (2001) describe as the learning transfer problem. Similar problems have been discussed as a knowledge transfer problem (Graham et al., 2006). Learning transfer is problematic for students using the geological time scale and calls for additional classroom interventions – interventions designed and scaffolded to provide students the opportunity to practice the set of difficult mental moves required to apply biological events to the relative geological timeline.
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American Association for the Advancement of Science. (2009). Benchmarks for science literacy. New York, NY: Oxford University Press. Retrieved from http://project2061.aaas.org/tools/benchol/bolframe.html (Original work published 1993)
Angelo, T., & Cross K.P. (1993). Classroom assessment techniques: A handbook for college teachers (2nd ed.). San Francisco, CA: Jossey-Bass.
Bao, L., Cai, T., Koenig, K., Fang, K., Han, J., Wang, J., Liu, Q., Ding, L., Cui, L., Luo, Y., Wang, Y., Li, L., & Wu, N. (2009). Learning and scientific reasoning. Science, 323(5914), 586587. doi: 10.1126/science.1167740
Bloom, B. S. (1964). Taxonomy of educational objectives: The classification of educational goals, by a committee of college and university examiners. New York, NY: Longmans and Green.
Bransford, J.D., Brown, A.L., & Cocking, R.R. (Eds.). (2000). How people learn: brain, mind, experience, and school. Washington, DC: National Academy Press.
Bransford, J.D., & Schwartz, D.L. (2001). Rethinking transfer: A simple proposal with multiple implications. Review of Research in Education, 24, 61-100.
Byrnes, J.P. (1996). Cognitive development and learning in instructional contexts. Boston, MA: Allyn and Bacon.
Catley, K. M., & Novick, L. R. (2009). Digging deep: Exploring college students' knowledge of macroevolutionary time. Journal of Research in Science Teaching, 46(3), 311-332. doi: 10.1002/tea.20273
Cheek, K. A. (2010). Why is geologic time troublesome knowledge? In R. Land, J.H.F. Meyer, & Baillie C. (Eds.), Threshold concepts and transformational learning (117-129). Rotterdam, The Netherlands: Sense Publishers.
Cheek, K. A. (2012). Students' understanding of large numbers as a key factor in their understanding of geologic time. International Journal of Science and Mathematics Education, 10(5), 1047-1069. doi: 10.1007/s10763-011-9312-1
Chubak, J., Yu, O., Buist, D.S.M., Wirtz, H.S., & Boudreau, D.M. (2013). Time scale in followup studies: Considering disease prognosis [Letter to the editor]. Epidemiology, 24(4), 628-629. doi: 10.1097/EDE.0b013e3182961708
DeLaughter, J. E., & Stein, S. (1998). Preconceptions about earth science among students in an introductory course. EOS, ,79 429-432. doi: 10.1029/98EO00325
Dodick, J., & Orion, N. (2003a). Cognitive factors affecting student understanding of geological time. Journal of Research in Science Teaching, 40, 415-442. doi: 10.1002/tea.10083
Dodick, J., & Orion, N. (2003b). Measuring student understanding of geological time. Science Education, 87, 708-731. doi: 10.1002/sce.1057
Graham, I.D., Logan, J., Harrison, M.B., Straus, S.E., Tetroe, J., Caswell, W., & Robinson, N. (2006). Lost in knowledge translation: Time for a map? The Journal of Continuing Education in the Health Professions, 26, 13–24. doi: 10.1002/chp.47
Hemler, D., & Repine, T. (2002). Reconstructing the geologic timeline. The Science Teacher 69(4), 32-35.
Jones, N. A., Ross, H., Lynam, T., Perez, P., & Leitch, A. (2011). Mental models: An interdisciplinary synthesis of theory and methods. Ecology and Society, 16(1), 46-46.
Lemke, J.L. (2000). Across the scales of time: Artifacts, activities, and meanings in ecosocial systems. Mind, Culture, and Activity, 7(4), 273-290. doi: 10.1207/S15327884MCA0704_03
Lemke, J.L. (2009). The long and the short of it: Comments on multiple timescale studies of human activity. Journal of the Learning Sciences, 10, 17-26. doi: 10.1207/S15327809JLS10-12_3
Libarkin, J. C., Kurdziel, J. P., et al. (2007). College student conceptions of geological time and the disconnect between ordering and scale. Journal of Geoscience Education, 55(5), 413-422.
MacKinnon, G. R. (2003). Why models sometimes fail: Eight suggestions to improve science instruction. Journal of College Science Teaching, 32, 430-433.
Meir, E., Perry, J., Herron, J.C., & Kingsolver, J. (2007). College students’ misconceptions about evolutionary trees. The American Biology Teacher, 69(70), 71-76. doi: 10.1662/00027685(2007)69[71:CSMAET]2.0.CO;2
Meyer, J., & Land, R. (Eds.). (2006). Overcoming barriers to student understanding: Threshold concepts and troublesome knowledge. London and New York, NY: Routledge.
Middendorf, J., & Pace, D. (2004). Decoding the disciplines: A model for helping students learn disciplinary ways of thinking. In D. Pace & J. Middendorf (Eds.), Decoding the Disciplines: Helping Students Learn Disciplinary Ways of Thinking: New Directions for Teaching and Learning, No. 98 (1-12). San Francisco, CA: Jossey-Bass.
Nieto-Obregon, J. (2001). Geologic time scales, maps, and the chronoscalimeter. Journal of Geoscience Education, 49(1), 25-29.
Novak, G. M., Patterson, E. T., Gavrin, A. D., & Christian, W. (1999). Just-in-time teaching: Blending active learning with web technology. Upper Saddle River, NJ: Prentice Hall.
Pace, D., & Middendorf, J. (Eds.). (2004). Decoding the Disciplines: Helping Students Learn Disciplinary Ways of Thinking: New Directions for Teaching and Learning, No. 98. San Francisco, CA: Jossey-Bass.
Pyle, C. (2007). Teaching the time: Physical geography in four dimensions. Teaching Geography 32(3), 121-123.
Richardson, R. M. (2000). Geologic time (clothes) line. Journal of Geoscience Education, 48, 584.
Ritger, S. D., & Cummins, R. H. (1991). Using student-created metaphors to comprehend geologic time. Journal of Geological Education, 39, 9-11.
Thorndike, E. L., & Woodworth, R. S. (1901). The influence of improvement in one mental function upon the efficacy of other functions. Psychological Review, 8, 247-261. doi: 10.1037/h0074898
Trend, R. D. (1998). An investigation into understanding of geological time among 10- and 11year-old children. International Journal of Science Education, 20, 973-988. doi: 10.1080/0950069980200805
Zen, E. A. (2001). What is deep time and why should anyone care? Journal of Geoscience Education, 49(1), 5–9.
Zhu, C., Rehrey, G., Treadwell, B., & Johnson, C. (2012). Looking back to move ahead: How students learn deep geological time by predicting future environmental impacts. Journal of College Science Teaching, 41(3), 61-66.