Abraham Lincoln

Esta excelente biografía del célebre químico francés está dirigida especialmente a los lectores jóvenes y presenta los logros más significativos de este importante científico. Él realizó investigaciones decisivas sobre la fermentación y las bacterias, sostuvo que los gérmenes eran los responsables de las infecciones y desarrolló el proceso de la pasteurización, de enorme importancia para la economía y la salud pública. Además, descubrió las vacunas contra el ántrax y la rabia. También fue el primer director del Instituto Pasteur, fundado en 1888 para investigar los virus y ...

This inspiring biographical series ties in with elementary history, science, and social studies curricula, providing teachers with a valuable interdisciplinary resource. With these books, young readers will discover historical figures who devoted their lives to making the world a better place, and changed the course of history. Text copyright 2004 Lectorum Publications, Inc.

Defines levers, explains their functions, and suggests simple experiments to demonstrate how they work.

Tras acompañar a H. W. Bates en su exploración por el Amazonas (de 1848 a 1852), Alfred Russel Wallace emprende la exploración del archipiélago malayo con el objetivo de avanzar en los descubrimientos sobre la selección natural de las especies. De resultas de este viaje (1854-1862), y seis años después, Wallace publica The Malay Archipielago (1869), obra cumbre de la literatura de viajes y un referente de los libros de ciencias del siglo XIX. [Resumen del libro].

The Industrial Revolution was one of the most dramatic eras of all time, filled with fascinating people, strange events, and incredible stories. This period of great change comes into sharp focus through each spread with detailed, accessible language. Each fact is complemented with vivid, carefully-chosen historical images and illustrations, and a caption that adds just a touch more history. Readers are drawn deep into the facts not covered in history textbooks, like working conditions, inventions, failures, and characters, to make this important history lesson fun and engaging.

Learn what it takes to be a community leader. This Spanish nonfiction book emphasizes the importance of local leaders and it includes a fiction story related to the topic, glossary, bonus activity, useful text features, and engaging sidebars. This 28-page full-color Spanish book describes the roles and responsibilities of various leadership positions. It also covers important civics topics like volunteerism and leadership, and includes an extension activity for grade 2. Perfect for the classroom, at-home learning, or homeschool, to explore communities, local government, and how individuals...

A girl buys two ice cream cones from a street vendor in her neighborhood, one for herself and one for her grandpa. But will both treats make it safely home? This beautifully illustrated Spanish picture book teaches beginning readers about acts of kindness. With vibrant illustrations that support the single Spanish word on each page, language learners will develop their oral language skills as they describe what is happening in each illustration. This book is ideal for both native Spanish speakers and those learning Spanish as a second language.