At this moment in our country's education system, when there is much discussion about teaching methods and practices, here is a presentation of attitudes and works that reveal procedures capable of comprehensively covering learning and scientific dissemination, involving teachers and students from higher and basic education (elementary and high school). This book reports on successful practices in scientific popularization, but its scope goes far beyond simply presenting science to elementary and high school students, as it demonstrates how it is possible to experience science together with a great learning opportunity for students and teachers through Science Fairs.