Stars form patterns in the night sky. They form shapes called constellations. People can observe different constellations at different times of the year. Beginning readers hone their phonics skills while learning all about star patterns. As readers practice decoding words with vowel-r combinations, they gain science knowledge. Every Stairway Decodables nonfiction book combines multiple aspects of the Science of Reading to support small group instruction, independent reading, and reading practice at home.