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- All Subjects: curriculum development
- Creators: Luft, Julie
Description
Conceptual change has been a large part of science education research for several decades due to the fact that it allows teachers to think about what students' preconceptions are and how to change these to the correct scientific conceptions. To have students change their preconceptions teachers need to allow students to confront what they think they know in the presence of the phenomena. Students then collect and analyze evidence pertaining to the phenomena. The goal in the end is for students to reorganize their concepts and change or correct their preconceptions, so that they hold more accurate scientific conceptions. The purpose of this study was to investigate how students' conceptions of the Earth's surface, specifically weathering and erosion, change using the conceptual change framework to guide the instructional decisions. The subjects of the study were a class of 25 seventh grade students. This class received a three-week unit on weathering and erosion that was structured using the conceptual change framework set by Posner, Strike, Hewson, and Gertzog (1982). This framework starts by looking at students' misconceptions, then uses scientific data that students collect to confront their misconceptions. The changes in students' conceptions were measured by a pre concept sketch and post concept sketch. The results of this study showed that the conceptual change framework can modify students' preconceptions of weathering and erosion to correct scientific conceptions. There was statistical significant difference between students' pre concept sketches and post concept sketches scores. After examining the concept sketches, differences were found in how students' concepts had changed from pre to post concept sketch. Further research needs to be done with conceptual change and the geosciences to see if conceptual change is an effective method to use to teach students about the geosciences.
ContributorsTillman, Ashley (Author) / Luft, Julie (Thesis advisor) / Middleton, James (Committee member) / Semken, Steven (Committee member) / Arizona State University (Publisher)
Created2011
Description
This teacher research study examined the effects of utilizing an intervention of Science Writing Heuristics (SWH) as a tool to increase learning during laboratory activities. Five of my eighth grade general science classes participated in this study. Two classes utilized SWH during their laboratory activities (the treatment group) and three classes performed and wrote up their labs in the more traditional, teacher-directed approach (the control group). The assessment scores of the students in the treatment group were compared to the assessment scores of the students in the control group. The post-assessments were analyzed utilizing a t-test. I was teacher in this study and the teacher of all five classes. Data from 41 students were analyzed in this study. A pre-assessment, six laboratory activities, instruction, and a post-assessment occurred within three weeks. The assessments were generated by myself and I performed a t-test using a two-sample analysis, assuming unequal variances (n=16 for treatment group, n=25 for control group) to compare the post-assessments from each group. Results indicated that there was no significant difference between the post-assessment scores of the treatment group with the post-assessment scores of control group (p=0.25). However, the t-test results revealed that when the pre- and post-assessments were compared, there was a significant difference (p=<0.05 for treatment group, p=<0.05 for control group). Each group showed considerable cognitive improvement between pre-assessment (mean scores: 52%-treatment group and 53%-control group) and the post-assessment (mean scores: 72%-treatment group and 80%-control group). This suggests that the presentation of the curriculum lacked a clear distinction between the treatment group and the control group yet benefited most students. Due to circumstances described in the limitations, further research is warranted.
ContributorsDrobitsky, Tamara (Author) / Luft, Julie (Thesis advisor) / Marsh, Josephine (Committee member) / Baker, Dale (Committee member) / Lyon, Edward (Committee member) / Arizona State University (Publisher)
Created2015