Cómo funcionan los ecosistemas

Alexander Graham Bell was always trying to invent new things! In this biography that has been translated into Spanish, readers will learn about Alexander's life as a teacher and inventor of such incredible inventions as the telephone, record player, and metal detector. Colorful images, supportive text, an interesting timeline, and a helpful glossary, table of contents, and index combine to give readers an inspiring look into the life of Alexander Bell. This 6-Pack includes six copies of this title and a lesson plan.

Presents a line-by-line explanation of the entire United States Constitution, in English and Spanish. Provides a Spanish translation of the Constitution, historical context and student exercises that approximate the decisions made by the Constitution's authors. Written at the fifth grade level.

En palabras del Ignacio Solares, se desentierran las preguntas y motivaciones de la profesión como psicólogo. ¿Por qué divierte la Psicología? El autor parte de esta pregunta para realizar un recorrido por la historia de esta disciplina. Describe desde las principales corrientes psicológicas y sus promotores, Pavlov, Charcot, Freud, Jung y Skinner, y otros más.

Follows the life and career of the French scientist who proved the existence of germs and their connection with diseases.