Each BIG IDEA book deals with an important topic from the Science or Social Studies curriculum. The key ideas of each topic are captured as “Big Ideas.” An inquiry-based approach encourages critical thinking, and built-in supports, such as text scaffolding and carefully chosen images, encourage readers to engage with the text. This series offers students opportunities to learn essential curriculum concepts, develop content-specific vocabulary and academic words in context, as well as acquire competencies in literacy and critical thinking skills that will equip them for success in school and the world beyond their classrooms.