Obedecer las reglas

¿Qué significa migrar? Descubra qué animales migran y por qué migran a través de fotografías detalladas y texto simple. What does it mean to migrate? Discover which animals migrate and why they migrate through detailed photographs and simple text.

Summarizes how water changes from a solid to a liquid and back again, and introduces related facts such as that water freezes at thirty-two degrees Fahrenheit and that ice floats.

This volume offers a concise overview that's perfect for young readers who are just learning about economics. A basic overview of supply and demand breaks down the concept with clear explanations of each aspect, using concrete examples to which readers of the focus age group can relate and understand. Vibrant illustrations help reinforce the text, and pertinent vocabulary is highlighted in bold boxes or in the glossary. Questions throughout help readers put the ideas into context. This lively text keeps readers engaged and turning the pages.

What is matter and where can it be found? Everything in the world is made of matter, whether it is a solid, a liquid, or a gas. Important ideas about matter such as volume, mass, and how matter changes state are conveyed through a series of easy-to-do experiments.

13 cuentos bellamente ilustrados, recogidos en el remoto Valle de Atríz, viajan hacia tí, incansable lector, para llevarte a conocer la tradición del pueblo que vive y ama al pie del coloso Ninan-Urcu, la Montaña de Fuego, al sur, muy al sur de la tierra colombiana. Vamos juntos hasta allá.

Some of the most powerful things in the world are so tiny they can't be seen with the naked eye! Readers will be amazed at what they see when they take a glance at the world of the mini but mighty in this stunningly fascinating Spanish-translated nonfiction title that features remarkable images and graphics, informational text, index, and glossary. Through these features, readers are able to explore and discover such micros as DNA, atoms, bacteria, phytoplankton, and nanotechnology items like nano-robots and microchips! This 6-Pack includes six copies of this title and a lesson plan.