La cara oculta de (la llegada del hombre a) la Luna

Brief biographies of well-known men and women, from ancient time to the present day, who made significant contributions in various fields.

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...

What’s the difference between a seal and a sea lion? These “second cousins” of the sea look similar, but there are many ways to tell these creatures apart. From ear shape to the noises they make to communicate, seals and sea lions are amazing creatures with both shared features and many truly unique attributes. They both share an ocean habitat, but when readers take a closer look, it’s easy to discover how they each fight off predators, mate, and raise their young in different ways. Captivating full-color photographs help to bring these marvelous mammals to vivid life.

La naturaleza no siempre es amable. Los desastres naturales como terremotos y tormentas pueden arrasar ciudades. Culturas enteras y sus historias corren el riesgo de perderse. ¡Cuando ocurre un desastre, los conservadores trabajan para guardar elementos culturales para preservar la cultura para el futuro! Creado en colaboración con la Institución Smithsonian, este libro en español despierta la curiosidad sobre los temas de STEAM a través de ejemplos del mundo real. Cuenta con un desafío STEAM práctico que guía a los estudiantes de inglés a través de cada paso del proceso de diseño...

This guide will train the next generation to overcome obstacles and flourish by coaching them to use the internationally renowned Getting Things Done methodology. A productive system at school and as a set of tools for everyday life.