¿Por qué existe la desigualdad entre los hombres y las mujeres?

Nearly 75% of planet Earth is covered in water and 96% of it is found in the ocean. We know more about outer space than we know about the depths of the ocean, but through the use of modern technology, scientists are shedding light on the Earth’s hidden underwater world. This nonfiction Spanish book explores the Earth’s oceans in depth and introduces students to new concepts, vocabulary terms, and STEM topics. Aligned to state and national standards, the leveled text supports students reading at above-, below-, and on-grade level. The fun lab activity encourages students to think like...

“Dino” Don Lessem brings readers face-to-face with various dinosaur species, detailing their habitats, way of life and how they became extinct. An acclaimed dinosaur expert, Don Lessem has written more than 30 children’s books, writes a popular dinosaur column in Highlights magazine, and was an adviser for Jurassic Park. Take a trip through dinosaur time to meet these duck-billed dinosaurs face-to-face: Corythosaurus could honk through the top of its head! Gryposaurus had hundreds of grinding teeth! Parasaurolophus could smack enemies with its strong tail! Plus, you'll get to know...

José Antonio Navarro was the most renowned Tejano of his generation. He fought valiantly for Texas' independence from Mexico, became a respected statesman, and even helped write the Constitution of 1845. This biography will inspire your young readers.

This book is a comprehensive, practical presentation of the principles of behavior modification and guidelines for their application. It teaches forms of behavior modification ranging from helping children learn necessary life skills to training pets, to solving personal behavior problems.