Table 2 Wilcoxon signed-rank test results for pre- and post-workshop microteaching sessions.

From: Transformative impact of pre-service CLIL science workshops on pedagogical content knowledge and language teaching competencies

Criterion (n = 15)

Pre-workshop median (IQR)

Post-workshop median (IQR)

Z

p value

Effect size (r)

Pedagogical content knowledge (PCK)

     

 Accuracy of content

1 (1–2)

3 (3–3)

−3.497

0.000*

0.903

 Clarity of explanations

1 (0–1)

3 (3–4)

−3.330

0.001*

0.860

 Engagement of students

1 (1–2)

3 (3–4)

−3.497

0.000*

0.903

 Lesson planning

1 (1–2)

4 (3–4)

−3.496

0.000*

0.903

 Assessment techniques

1 (1–1)

3 (3–4)

−3.438

0.001*

0.888

 Implementation of scaffolding techniques

1 (0–1)

3 (3–4)

−3.453

0.001*

0.892

Language teaching skills

     

 Use of language of learning

1 (1–2)

4 (4–4)

−3.462

0.001*

0.894

 Use of language for learning

0 (0–1)

3 (3–4)

−3.475

0.001*

0.897

 Use of language through learning

0 (0–1)

3 (3–4)

−3.499

0.000*

0.903

  1. The rubrics were used by two raters based on a five-point scale.
  2. IQR interquartile range.
  3. *indicates significance at p < 0.003125.