Set 4 of these Science of Reading aligned decodable books takes you through five 12-page books that focus on word endings for early readers. Each book includes a list of sight words necessary to know before reading as well as a list of "tricky" words at the back. The endings coverd (in groups) are -ang/-ing/-ong/-ung, -ank/-ink/-onk/-unk, -ed/-es, -le, -y. These books are carefully crafted to fit right into the Montessori classroom, with many illustrations, pictures and fun story lines, many of which that take place right inside the Montessori classroom itself. These books were created to foster independence and confidence in early readers.