Action, reason, geometric middle, developmental perspective, International Center for Genetic Epistemology Analyse of the activity, strategy, behaviour, spreadsheet, learning Ancient remains, amphorae, mediation Area Measurement, teaching area measurement, measurement tools, elementary school Astronomy Astronomy, Astrophysics and Cosmology Astrophysics Avalanche, joint action theory for didactics (JATD), physics, resources, science communication Biology, competencies, national / global context, PISA, school-based exams Chemical reaction, MBL, Lebanon, labwork Children, ICT, technology, home, early childhood education Community, resources, teachers Concept force, didactic transposition, mathematical approach, students’ difficulties misconceptions Condensed Matter Physics Condensed matter Content analysis, qualitative research, primary school, scientific research activity Contradictions, conflicts, turning points, early childhood, science education, motives, demands, everyday concepts, scientific concepts Cosmology Didactics, Physics Sciences, modelling activities, electrostatics field Digital technology, documentation work, programming, students’ autonomy, teacher education Early childhood science, drawing, young children’s ideas, change of state Early childhood, cultural-historical, sociocultural, early years, science education, technology education, engineering education Earth science curriculum, student learning, quality assessment, validity and reliability study, survey development Educative robotics, primary school, learning, micro-genetics approach, activity analysis Energy, conservation, transformation, equivalence, history of science Energy, transformation, vertical path, primary, middle school Environmental education, environmental issues, social representations, word associations, environmental conceptions Explanations construction, teaching, sciences, preschool France, history of science, teaching, experimental sciences, Volta Geology, Biology, time, explanatory register, obstacles