Emergency vehicles are there when people need help. Sometimes we need help when we are sick or there is a fire, or even when our car is not working. Let's explore the different vehicles that come to help The Mi Mundo (My World) series is perfect for young learners in prekindergarten through grade 2. These 16-page books give readers an accessible introduction to nonfiction reading. Color photographs and fun, factual examples will grab the attention of young readers and help strengthen reading comprehension skills.