Abstract: The paper reviewed our study on children’s understanding of science concepts, including children’s naïve biology, naïve physics and their relation with their theory of mind, meaning to explore the relation of children’s understanding in the three core knowledge domains. We explored children’s understanding of growth, aging, illness/health and death. We also investigated children’s naïve physics, intending to find out children’s cognitive potential and to enhance their naïve conception changing to scientific understanding. Factors that may influence children’s understanding were also investigated. It may shed some light on science education

Key words: Science concept, cognitive development, naï, ve biology, naï, ve physics, theory of mind