Abstract :
[en] The study examined the impact of Professional Development (PD) on preschool teachers' content knowledge (CK), pedagogical content knowledge (PCK), and scaffolding practice. In a pre-post-follow-up design, 77 teachers were assigned to three groups (EG1: block play curriculum materials + PD, EG2: block-play curriculum materials, CG: no materials). Results showed improvements in teachers' scaffolding after the PD, but no changes in CK or PCK. The use of block-play curriculum materials and scaffolding was associated with an improvement in children's math knowledge, but not with their stability knowledge. The study highlights the need for practice-oriented PD aligned with preschool teachers' everyday practice.
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