This set expands reading skills, builds comprehension strategies, and exposes children to non-fiction texts. It provides a combination of words containing short and long vowel sounds, more complex sight words, and illustrations that enhance meaning and tone, allowing children to experience real-world reading. These books are based on early-learning life-science concepts, requiring children to make text-to-world connections, as they focus on a specific comprehension strategy: identifying the main idea and details.