Construyendo una casa

Brush your teeth up and down to keep your teeth healthy and your smile beautiful. Brushing your teeth is easy. Paired to the fiction title My Routine.

Animals sing or talk to communicate. They make noise for different reasons. Find out why some animals make certain noises. Paired to the fiction title So Many Classes.

The Earth is made up of shapes. The shapes make up landforms. Find out about all of Earth’s landforms. Paired to the fiction title A Long Car Ride.

James Lovelock —autor de la La venganza de la Tierra, Planeta, 2007— pone sobre la mesa las pruebas de un futuro poco esperanzador para nuestro planeta. El polémico científi co creador de la teoría de Gaia —que considera la Tierra como organismo vivo que se autorregula en pos de su supervivencia— presenta aquí una verdad aún más incómoda que la de Al Gore. Ninguna acción humana tiene la capacidad de reducir las consecuencias con la rapidez suficiente, ni siquiera para frenar el cambio climático. Sin embargo, la civilización tiene el deber de sobrevivir en los pocos refugios...

Este libro describe la historia del Jiu Jitsu, desde los orígenes de las artes marciales, hasta su publicación. Es el primer libro cuya temática se circunscribe al desarrollo histórico del Jiu Jitsu de Costa Rica.

The story of Paul Revere, who rode from Boston to Lexington and Concord to warn the colonists that the British army was coming. In graphic novel format.

Learn the history of number systems with this engaging Spanish book! This text combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. Students will learn place value while reading about the number systems of the Egyptians and Romans, and also learn important vocabulary terms like cuneiform, binary systems, roman numerals, and more! The full-color images, math charts, and practice problems make learning math easy and fun. The table of contents, glossary, and index will further understanding of math and...