Lisa Greathouse 
Animales salvajes [PDF ebook] 

There are all kinds of ways to sort wild animals! This fun, Spanish-translated title teaches young readers how to recognize animals’ different qualities and sort them into sets, familiarizing children with set theory, data analysis, and early STEM themes. With the help of fun, familiar images, engaging "You Try It!" problems, and a glossary, children will be able to sort animals into many different categories–big or small, fast or slow!