EDRE5870 – Article Review Chart Shawn Laatsch Study Citation Plummer, J.D. (2008). Early Elementary Students’ Development of Astronomy Concepts in the Planetarium. Journal of Research in Science Teaching, 46, 192-209. Purpose of Study To evaluate how instruction on apparent celestial motion conducted in a planetarium setting would impact elementary students understanding of these observable patterns. Research Questions 1) Do students who participate in a planetarium program that utilizes kinesthetic learning techniques improve their descriptions of the patterns of motion of celestial objects? 2) Do students who participate in planetarium program that utilizes kinesthetic learning techniques improve their conceptions of additional topics covered in the planetarium program that were not taught by kinesthetic learning techniques? Theoretical Framework Based on constructivism and is attempting to understand how kinesthetic techniques used in a planetarium environment could enhance student understanding. Constructs and Definitions Kinesthetic instruction in a planetarium setting, celestial motions Methodology Constructivism, Qualitative Analysis Methods The author worked with 10 randomly selected students from seven first and second grade classes, interviewing selected students both before and after their planetarium experiences which looked at the apparent motions of the Sun, Moon, and Stars. Data codes were developed for coding information collected in interviews, and Plummer used the Mann-Whitney U-test for non-parametric data. Findings and Results Plummer’s findings suggest that students showed significant improvement in understanding the apparent motions of the Sun in different seasons, change in the Moon’s appearance (phases), fundamental understanding of what causes day and night, and the motions of stars over the course of a night. All of the students made significant improvement in their understanding, and greater gains were made by the female students. Limitations and Criticism The study is that it primarily focused on kinesthetic methods and did not take into account other effects of the planetarium environment on learning. It evaluated student gains over a very short period of time, so the long term retention of these gains is unknown. Conclusions (theirs and yours) Plummer concludes that first and second grade students showed significant improvement in their understanding of apparent celestial motions after a planetarium intervention using kinesthetic methods. I agree with the author that the students seem to have made significant gains in understanding of celestial motion from the planetarium intervention. I do feel that since it only tested kinesthetic instruction it may have failed to take into account the planetarium visualization environments effects on the gains in understanding. Study Citation Jones, M.G., Taylor, A., Minogue, J., Broadwell, B., Wiebe, E., and Carter, G. (2006). Understanding Scale: Powers of Ten. Journal of Science Education and Technology, Vol.16, No. 2, April 2007. Purpose of Study To examine how students learn size and scale and how virtual representations (i.e. computer animations) engage learning of this complex topic. Research Questions 1) Does viewing the film, ‘‘Powers of Ten’’ alter students’ understandings of spatial distances over many orders of magnitude? 2) If there are gains in knowledge, are their differences in students’ understandings of large and small scales? Theoretical Framework None Stated Constructs and Definitions Powers of Ten, microscale, and macroscale Methodology Hermeneutics, Qualitative Analysis Methods The authors worked with female middle school students and experienced teachers. A Proportional Reasoning Assessment Instrument was used as a pre-test with students, interviews prior to and following students viewing of the Powers of Ten film were conducted, and students also were tested using a sets of Scale Sort Cards. The teachers completed a written survey of their perceptions of the film. A matrix was created by the authors to compare pre and post conceptions of size and scale in regards to seeing the film. Findings and Results Jones et al concludes that the Powers of Ten film significantly improved students understanding of size and scale, particularly of scientific notation (powers of ten). The study also concludes that small scales (micro) were more difficult for students to conceptualize than larger scale (macro) ones. Limitations and Criticism A limitation of the study is that the study was only conducted with female middle school students, and so one does not know if the results would be similar for male students. The sample was 22 students participating in a summer Biology Camp, and may have not been fully representative of general student populations. Conclusions (theirs and yours) Jones et al conclude that teachers need to explicitly teach students about both relative and mathematical (absolute) scale, and that students typically encounter difficulty with aspects of scale that are beyond normal human experiences. I agree with the author that the students seem to have made significant gains in understanding of celestial motion from the planetarium intervention. I do feel that since it only tested kinesthetic instruction it may have failed to take into account the planetarium visualization environments effects on the gains in understanding. Study Citation Kucukozer, H., Korkusuz, M. E., Kucukozer, H.A., and Yurumezoglu, H.A. (2009). The Effect of 3D Computer Modeling and Observation-Base Instruction on Conceptual Change Regarding Basic Concepts of Astronomy in Elementary School Students. Astronomy Education Review,8, 0101104-1, 10.3847/AER20090006. Purpose of Study To examine elementary students conceptions about astronomical phenomena and to determine the effect of computer modeling/visualization on understanding of astronomical concepts Research Questions 1) Does the use of POE teaching with 3D computer modeling have a significant effect on elementary students understanding of basic astronomical phenomena (Day & Night, Seasons, Moon Phases, and placement of stars)? 2) Can use of these techniques bring about significant conceptual change in students understanding? Theoretical Framework Constructivist and Conceptual Change Theories Constructs and Definitions POE – Predict Observe Explain teaching strategy Methodology Qualitative approach Methods Students aged 11-13 were give an Astronomy Concept Test as a pre and post test containing questions on day and night, reasons for seasons, phases of the Moon, and positions of the stars. These were given around POE supported instruction with students. Follow-up interviews with students were also conducted following post tests. Findings and Results The authors’ findings are that instruction supported by observations and 3D computer modeling was significantly effective in bringing about conceptual change and learning. The ratio of students who accurately understood the cause for Day and Night increased by 15% after the use of POE with 3D computer models, and there was a 42% increase in students who correctly understood the phase of the Moon following the POE with 3D models. Limitations and Criticism The study while it showed significant gains in understanding of Moon phases and Day and Night cycles, had a lack of significant results with understanding of Reasons for Seasons. The POE teaching strategies were only employed for 15 forty minute class sessions over 5 weeks. The 3D models used in the study were not manipulated by students, but rather were visualizations presented from different visual points of view. Conclusions (theirs and yours) The Authors’ conclude that POE (Predict-Observe-Explain) tasks using computer modeling has a beneficial effect on conceptual change and understanding of basic astronomical concepts and relationships. 3D computer models – models created for display on a flat screen computer that allowed for viewing at numerous positions Study Citation Price, A., and Lee, H.S., (2010). The Effect of Two-dimensional and Stereoscopic Presentation on Middle Schools Students’ Performance of Spatial Cognition Tasks. Journal of Science Education Technology, volume 19, p. 90-103 Purpose of Study To determine whether and how student performance on spatial cognition tasks differ when worked with 2D or stereoscopic 3D representations. Research Questions How does middle school students performance and strategies on spatial cognition tasks differ when the tasks are presented Stereoscopically (in 3D) or in 2D (flat) representations? Theoretical Framework Cognitive Load and Cue Theories Constructs and Definitions Spatial Cognition, Stereoscopic 3D Visualizations, Cognitive Load Methodology Phenomenology Methods Nineteen middle school students were randomly selected at a museum to take part in the study. These students were given spatial cognition tasks in 2D (paper) and the same task Stereoscopic 3D (using a GeoWall). These tasks included letter rotation, block rotation, and paper folding tasks. Tasks were first completed in 2D and then in 3D. Students’ time and accuracy of tasks were recorded and exit interviews were conducted and recorded with the students. Findings and Results In the 2D tasks, accuracy was highest in paper folding, followed by letter rotation, and block rotation (61%, 54%, and 50% respectively). In 3D the scores were highest from letter rotation, then paper folding, and finally block rotation (50%, 49% and 47% respectively). The scores imply there is no significant difference between 2D and 3D accuracy on spatial cognition tasks. The length of time was slightly longer with 3D task (on average 8 second) than the same tasks completed in 2D. The results indicate that stereoscopic imagery were more difficult for middle school students to manipulate than 2D images. The study was limited to a few practice items for each task and subject selected may not have been representative of the general public, as these were students at a museum over their winter break. Subjects were ones having a greater interest in science and computers than the general population of the area. Limitations and Criticism Conclusions (theirs and yours) Price and Lee conclude that stereoscopic visualizations may enhance and be an opportunity for teaching spatial relationships and retaining student interest in science. They go on to say that curriculum designers and educators need to consider the added cognitive load when using visualizations in teaching. The authors case is presented reasonably well, but I feel the study was too limited to make an accurate determination of the effects of stereoscopic visualizations on middle school students. No follow-up tests were conducted to see if there were long term gains. Also the students had a few minutes to learn how to use the stereoscopic visualization tools. With more exposure to these tools, greater gains would most likely be realized. Study Citation Barnett M., Yamagata-Lynch, L., Keating, T., Barab, S., and Hay, K.E., (2005). Using Virtual Reality Computer Models to Support Student Understanding of Astronomical Concepts. Journal of Computers in Mathematics and Science Teaching (2005), volume 24(4), p. 333-356. Purpose of Study To examine how 3D models of the Solar System supported development of conceptual understanding of astronomical phenomena requiring a change of reference/point of view. Research Questions 1) Does the use of computational models impact student understanding of astronomy concepts? Theoretical Framework 2) Which astronomy concepts are best taught using 3-D computational models? Conceptual Change Theory Constructs and Definitions 3D Virtual Reality Modeling Methodology Phenomenology Methods Students in the astronomy course created three computer models: 1) a celestial sphere, 2) a model of the Earth-Moon System, and 3) a model of the solar system. Semi-structured interviews were conducted with students taking the astronomy course at the beginning and end of the semester to measure understandings of the relationships in these models. These focused on a wide range of astronomy concepts, but were derived from alternative concept research. A scoring rubric from 0-4 was developed for coding the interviews. A score of 0 was no concept, while a score of 4 was complete/sound understanding Findings and Results Students in the course made significant gains in their understanding of the modeled astronomical concepts requiring a change of reference going on average scores of 1.65 (confused or incomplete understanding) at the beginning of the course to a average scores of 3.15 (between partial and complete understanding) at the conclusion of the course. Limitations and Criticism The study had a limited sample size of 8 undergraduate college students in a 1 semester course. Conclusions (theirs and yours) The authors conclude that incorporating 3D computer modeling activities has the potential to facilitate students’ re-evaluation of their alternate frameworks. It engages students, and the interactions with these models feed further understanding of multiple perspectives, assisting in greater understanding of spatially driven astronomical concepts. VRML – Virtual Reality Markup Language use for developing models My analysis is that the authors are on the right track, but I feel the sample size and the limited study is really only a first step in evaluating the use of computer models in astronomy education. Study Citation Hobson, S.M., Trundle, C.T., and Sackes, M. (2010). Using a Planetarium Software Program to Promote Conceptual Change with Young Children. Journal of Science Education Technology, volume 19, p. 165-176 Purpose of Study To address and describe young children’s conceptual understandings about patterns in, and the cause of, lunar phases before and after an inquiry-based instructional intervention with technology. Research Questions 1) What do primary children know about when the Moon can be observed before and after inquiry-based instruction? 2) What do children know about observable Moon phase shapes and sequences before, during, and after inquiry based instruction? Theoretical Framework Constructs and Definitions 3) What do children understand about the cause of Moon phases before and after inquiry-based instruction? Conceptual Change and Inquiry-Based Instruction Lunar phase concepts Technology Enhanced Instruction Methodology Mixed Methods Methods Research was conducted with 21 students in grades 1-3 from a Midwestern suburban school district. Students worked in groups of four using the Starry Night software on computers. Students used the software to explore phases and collect data on shape of the Moon, rising and setting times of phases, and modeling causes for phases. Data was collected by conducting interviews with students, student drawings, card sorting, lunar calendars, and written responses, along with field notes and video recording of class sessions. Findings and Results Qualitative Findings – prior to instruction, 52% of students held alternative conceptual understanding of the cause of Moon phases, this number was reduced to 33% after instruction. There was a dramatic improvement (81%) in students understanding of when the Moon can be seen (particularly that the Moon is observable both day and night). Overall there was change in understanding from mostly alternative to mostly scientific understanding of lunar phases. Quantitative Findings –Results showed that significantly more children drew moon sequences on the post test than the pretest. Gains in understanding of moon phase shapes had gains of 38% , and scientific causes for phases and the sequence of phases showed a 52% gain. Limitations and Criticism Sample size limited to 21 elementary students. Moon phases concepts typically are very misunderstood by young children due to the complexity of the spatial relationships. Students age 7-9 may not be able to cognitively construct scientific mental models of lunar phases. Conclusions (theirs and yours) The authors conclude that inquiry-based guided instruction using technology can significantly improve young students understanding of lunar phases. My assessment is that the authors data seems to support their claims of enhanced understanding, but I feel the students they were working with were too young to have full cognitive processing capabilities to build the mental models.