Un pajarillo canta

An elementary introduction to the workings of the human body, the skeleton, skin, circulation, and nervous system.

¿Cómo te va a ayudar esta guía? ERRORES Y HORRORES MAYÚSCULOS es una guía práctica y visual para no cometer las faltas de ortografía más frecuentes y resolver dudas. Y lo conseguirás sin tener que aprender aburridas teorías o complicadas normas. ¿Cómo? Con ejemplos prácticos, rimas pegadizas y trucos infalibles. ¿Qué encontrarás? - Ejemplos claros que se entienden sin necesidad de memorizar reglas. - Trucos fáciles para resolver tus dudas en los casos expuestos, donde se muestran los errores más habituales. - Rimas sencillas de recordar para evitar faltas de ortografía. No...

Many children have heard of dams, but not many know what they are. This book engages young readers as it reveals the many fascinating aspects of the worlds largest dam, which was built on the border of Paraguay and Brazil.

Every living thing you see is made up of tiny cells. Each of these cells has its own job to do. They work together to do everything an organism needs to stay alive. That's why biologists often call them the "building blocks of life." Learn all about plant and animal cell theory and structure with this Spanish science reader that brings the power of science and informational text to students at a level they can understand. Introduce students to STEM topics and new vocabulary terms like osmosis, diffusion, organelles, and active and passive transport with this nonfiction book that is aligned to ...