Replication Data for "Delphi Validation Process of a Tool to Assess STEAM Materials in Early Childhood Education"

Dataset Overview
This dataset contains the results of a two-round Delphi process aimed at developing and validating an assessment tool for STEAM educational materials in early childhood education (ages 3–6), grounded in Montessori pedagogy.

The dataset includes both quantitative and qualitative data derived from expert evaluations, as well as a complementary systematic table of existing STEAM assessment tools and frameworks used to inform the development process.

The dataset is composed of three main components:
1. Delphi Round 1 Data
- Expert ratings of items (Likert scale)
- Qualitative feedback and suggestions
2. Delphi Round 2 Data
- Revised item evaluations
- Assessment of value system
3. STEAM Assessment Framework Table

A structured review of relevant studies and frameworks, including:
- STEAM competence assessments (e.g., Chen & Ding, 2025)
- Teacher digital competence rubrics (e.g., Lázaro-Cantabrana & Gisbert, 2015)
- STEAM educator frameworks (e.g., Kim & Kim, 2016; Spyropoulou & Kameas, 2024)
- European project outputs (e.g., STEAMonEdu deliverables)