Dona Herweck Rice 
Your World: Shoes [PDF ebook] 
Classifying

Count, sort, and classify the boots, heels, and sneakers! Early readers will enjoy learning to classify and sort objects with this Spanish book for kids. With bright images and simple text, this full-color book develops students‘ math and reading skills. The Math Talk questions build fluency and comprehension of basic math concepts. Perfect for shared or guided reading, this nonfiction kids book is ideal for kindergarten and ages 4-6.