In Greg's Garage Sale, beginning readers follow along as Greg learns to add, subtract, and count back change and whole numbers using a number line. Vibrant illustrations and carefully leveled text engage beginning readers in a supportive educational fiction reading experience about a key math concept. A supplementary quiz asks readers to add and subtract in two equations using number lines, while a picture glossary reinforces new vocabulary. Greg's Garage Sale also features reading tips for teachers and parents and a table of contents. Grasshopper Books offers simple, fun fiction for emerging readers. Greg's Garage Sale is part of Jump!'s Math Adventures series.