This book deals with research into children's rule games (Never Three and Day and Night), in which intelligence was at stake. It was analysed from Jean Piaget's perspective, considering his theory, Genetic Epistemology. This research concluded that intelligence is circumstantial and that games can be a valuable tool in the teaching and learning process in any subject. As such, this study is recommended as a reference for the inclusion of corporeality and playfulness to improve teaching in the field of pedagogy in general.