An Inquiry Into Personal Pedagogical Content Knowledge of Science Teachers: Stories of Teaching Electricity
Bibliographic record
Abstract
This research studied the experiences of science teachers to expose their personal pedagogical content knowledge (pPCK) of teaching electricity. Three secondary and two elementary teachers participated in this research. A narrative inquiry approach was used to study their experiences of planning and teaching an electricity unit. Oral and written narrative data were collected from multiple sources before, during and after implementing the electricity unit. Data were analyzed using topic-specific PCK (TSPCK) as a conceptual framework and narrative analysis as a technique. Meaningful and coherent stories of teaching electricity were developed to gain access to participants’ pCPCK. These stories revealed many constituent elements of pPCK in the form of events, incidents or stories of teaching electricity, exposing the narrative nature of pPCK. The study further explored the similarities and differences between secondary and elementary teachers’ pPCK of teaching electricity. The study has implications for pre-service science teacher education.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.007 | 0.022 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.007 | 0.014 |
| Scholarly communication | 0.006 | 0.007 |
| Open science | 0.002 | 0.007 |
| Research integrity | 0.002 | 0.003 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".