ERIC Number: EJ1071560
Record Type: Journal
Publication Date: 2015-Oct
Abstractor: As Provided
Exploring the Effect of Embedded Scaffolding within Curricular Tasks on Third-Grade Students' Model-Based Explanations about Hydrologic Cycling
Zangori, Laura; Forbes, Cory T.; Schwarz, Christina V.
Science & Education, v24 n7-8 p957-981 Oct 2015
Opportunities to generate model-based explanations are crucial for elementary students, yet are rarely foregrounded in elementary science learning environments despite evidence that early learners can reason from models when provided with scaffolding. We used a quasi-experimental research design to investigate the comparative impact of a scaffold test condition consisting of embedded physical scaffolds within a curricular modeling task on third-grade (age 8-9) students' formulation of model-based explanations for the water cycle. This condition was contrasted to the control condition where third-grade students used a curricular modeling task with no embedded physical scaffolds. Students from each condition (n[subscript scaffold] = 60; n[subscript unscaffold] = 56) generated models of the water cycle before and after completion of a 10-week water unit. Results from quantitative analyses suggest that students in the scaffolded condition represented and linked more subsurface water process sequences with surface water process sequences than did students in the unscaffolded condition. However, results of qualitative analyses indicate that students in the scaffolded condition were less likely to build upon these process sequences to generate model-based explanations and experienced difficulties understanding their models as abstracted representations rather than recreations of real-world phenomena. We conclude that embedded curricular scaffolds may support students to consider non-observable components of the water cycle but, alone, may be insufficient for generation of model-based explanations about subsurface water movement.
Descriptors: Scaffolding (Teaching Technique), Task Analysis, Elementary School Students, Grade 3, Concept Formation, Models, Science Process Skills, Water, Elementary School Science, Abstract Reasoning, Statistical Analysis, Qualitative Research, Earth Science, Quasiexperimental Design
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Publication Type: Journal Articles; Reports - Research
Education Level: Elementary Education; Grade 3; Primary Education; Early Childhood Education
Authoring Institution: N/A