En Redes - para trens

How do countries work together? Running a country requires hard work. There is a lot involved. That includes making laws that help people do the right thing. When leaders work together, their countries benefit. This Spanish book introduces 2nd grade students to the concepts of diplomacy, government, and foreign relations. Detailed images in conjunction with easy-to-read text and basic text features provide readers with an inviting reading and learning experience as they build social studies knowledge.

When rocks change because of environmental conditions, the new rocks are called metamorphic rocks. A rock's chemical or physical makeup may change because of conditions such as temperature, stress, or pressure. Your readers will learn fascinating facts including where metamorphic rocks are most commonly found, the different types of metamorphism, and how metamorphic rocks are identified. Full-color photographs depict these rocks in nature. A helpful graphic organizer shows how these fascinating rocks form.

Darwin dedicO su vida a los animales y se embarcO en un viaje que le llevarIa a descubrir increIbles cosas sobre ellos. La Tierra estA llena de seres vivos, pero nadie sabIa explicar con certeza tanta diversidad. Hasta que un hombre se embarco en un largo y fascinante viaje e imaginO una respuesta. Esta es la gran aventura que llevO a Charles Darwin a recorrer el mundo, estudiar a los animales y descubrir cientos de especies y cosas muy interesantes sobre ellas. Zarpa con nosotros en este viaje alrededor del mundo y disfruta de una aventura llena de animales, naturaleza y grandes...

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.