Use PDEODE tasks (Predict-Discuss-Explain-Observe-Discuss-Explain) to facilitate conceptual change in chemistry topics¶

Strategy · All strategies
Evidence · 4 claims (4 for) · 1 study (1 causal), q3 · 0 of 1 report an effect size · 4 claims rest on one study

Description¶

PDEODE is a six-step variant of the Predict-Observe-Explain technique proposed by Savander-Ranne and Kolari (2003). Students individually predict and justify what will happen (P), discuss and share ideas in groups (D), reach a group consensus and present it in whole-class discussion (E), perform a hands-on experiment and record observations (O), reconcile predictions with observations (D), and confront and resolve any contradictions (E). The teacher challenges students, facilitates discussions, asks probing questions, and guides observation of target concepts.

Design Implications¶

Context¶

Requirements¶

• An activity sheet presenting the target phenomenon; students work collaboratively in groups and fill in activity sheets individually
• The teacher guides discussion steps and probes student reasoning

Constraints¶

• Administered here as a 60-min scheduled class with groups of 7 and 6 students led by the first author

Target Learners¶

• first-year primary science education university students

Target Learning Goals¶

• scientific conception of condensation and reduction of alternative conceptions

Claims¶

• Conceptual change about condensation after PDEODE teaching was retained at delayed post-test for most alternative conceptions, but not for SAC #4 and #6 [+W]
• Interviewed students at below-average, average, and above-average levels showed improved understanding of condensation after the intervention [+W]
• Responses classified as sound understanding on open-ended condensation items rose after the intervention and were still above pre-test levels at delayed post-test [+W]
• A PDEODE teaching activity reduced first-year students' alternative conceptions about condensation from pre-test to post-test [+W]

Related Strategies¶

• Predict Observe Explain
• Prediction Observation Explanation

Examples¶

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Key Sources¶

• Bayram Costu, Alipasa Ayas, Mansoor Niaz. (2011). Investigating the effectiveness of a POE-based teaching activity on students' understanding of condensation. Instructional Science. https://doi.org/10.1007/s11251-011-9169-2