Introduction Children investigate the natural world by growing plants, building structures, interacting with pets, kicking balls, exploring ponds, and preparing foods. Children formulate conjectures and test them against their experiences or manipulations of their surroundings. These experiments include comparisons of alternatives (for planting, cooking, throwing objects) as well as observations (of plants, rocks, trajectories, ecosystems, household appliances, animals, chemical combinations) and elaborate constructions (of boats, paper airplanes, animal houses, forts, costumes, machines). Many ideas about science that children have in their repertoire come from these explorations. To promote KI we seek to build on these autonomous and self-guided experiences and encourage lifelong exploration of science.