How Can Annotated Video Transform Future Teachers' Reflection?

During a five‑month internship in Germany, 55 education‑science students tried three different ways to reflect on their lessons. The control group wrote text‑based protocols, a second group watched recordings of their own lessons without guidance, and the third used a digital video annotation (DVA) system that lets them tag specific moments with theory‑based comments. Before and after the semester, all participants took a video‑based analysis‑competence test. Results show that, regardless of method, everyone improved their ability to analyse a lesson. However, the video‑using groups showed larger gains in whole‑lesson reflection, while the DVA group achieved the best results in reflecting on specific situations, even surpassing the text‑only group. Although differences between groups were not statistically significant, trends suggest that time‑stamped, theory‑aligned scaffolds like video annotations can push pre‑service teachers from superficial description toward deeper, concept‑driven reflection. This points to structured digital tools becoming valuable support in teacher‑training programmes.

The digital video annotation (DVA) intervention rests on metacognitive and cognitive‑scaffolding principles. Time‑stamped annotations allow students to link observable events (e.g., a classroom question) to theoretical concepts (such as classroom management or differentiated instruction) in real time, reducing episodic memory load. Methodologically, the study employed a randomized design with three conditions, balancing potential confounders (age, teaching subject, prior experience). Competence was assessed with a video‑based test measuring two dimensions: process reasoning (whole‑lesson reflection) and synthetic competence (analysis of specific situations). Results show significant within‑group gains for the video‑based conditions on process reasoning, suggesting that viewing one's own teaching activates cognitive restructuring. For synthetic competence, only the DVA group improved significantly, indicating that guided annotation structure promotes detailed analysis and generalisation of pedagogical principles. Repeated‑measures ANOVA and mixed‑effects models revealed trends favouring DVA, though they did not reach conventional significance (p < .05). This may stem from the limited sample size (n=55) and individual variability in reflective ability. Theoretically, findings support Kolb’s experiential learning cycle, where concrete reflection (watching the video) followed by abstract reflection (annotating with theory) transforms experience into applicable knowledge. Moreover, DVA aligns with Schön’s reflective practice model, offering a more structured “reflection loop” than simple video review. In sum, time‑stamped digital scaffolds can boost pre‑service teachers’ reflective competence, but larger samples and long‑term follow‑up are needed to confirm efficacy and sustainability.