Empecemos de cero

El ser humano no está estructuralmente preparado para desenvolverse de forma óptima en el medio acuático, sin embargo, tiene la capacidad de aprender para mejorar su competencia. En este libro se presentan los condicionantes de la estaticidad y del movimiento del cuerpo en el medio acuático, distinguiendo los elementos que son propios del agua de los que son propios del cuerpo, para determinar qué factores son los que se pueden mejorar para optimizar el dominio de este medio. Además, como complemento fundamental, se integran en este proceso las áreas del control motor, la...

It was September 14, 1814, and America and Great Britain were at war. Frances Scott Key watched from the deck of a British ship, where he was being held captive, as cannons exploded around them. After 25 hours, the fighting ceased and Key peered through the clearing smoke, looking for some sign as to the outcome of the battle. Was the American flag still flying? His wartime experience inspired Key to write a poem, which was later set to music and became America’s national anthem. This book tells the story of the inspiration behind our national anthem, which helped transform the flag into a...

GRADES K–2: Bring Spanish into the classroom! Introduce early elementary students to the topic of sound waves with this science-themed Spanish title. FEATURES: Kids will learn about how we send and recieve sound waves and complete an activity that supports further comprehension. EARLY BILINGUAL LITERACY: Help young learners strengthen their bilingual skills—add the English version of this title into your collection, too. WHY MY PHYSICAL SCIENCE LIBRARY: This collection introduces a variety of science topics while presenting complicated information in easy-to-understand language and...

From Mexico to the tip of South America, Latin America features varied scenery, including deserts, grasslands, plains, and mountains. Some are extreme: The Andes is the world's longest mountain range, and the Atacama Desert has not had rain for over 400 years! Latin America's remarkable landscape is an essential factor in its surprisingly different climatic zones. This insightful volume offers a comprehensive tour of the many vibrant countries of this fascinating region, highlighting its most striking areas in vivid photographs. It is also an inviting exploration of geography, natural...