La historia de: los sistemas numéricos: Valor posicional

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...

Rabbit burrows play an important part in the life of a rabbit. A burrow provides a place to live, a place to raise baby rabbits, and a place to stay safe from predators. This volume, which was written to support elementary science curricula, examines the role a burrow plays in the survival of a warren, and how that in turn helps rabbits contribute to ecosystems around the world. The text’s age-appropriate, science-rich content focuses on rabbit behavior and encourages readers to draw connections between what they learn in science class and what they see outside. This text is complemented by ...

In My Friend Has Down Syndrome, beginning readers are introduced to different characters who have Down syndrome, how Down syndrome may affect their actions, and how we can be good friends to people who have Down syndrome. Vibrant, full-color photos and carefully leveled text engage young readers as they discover how to empathetic and inlude all kinds of friends.

Hace mucho, mucho tiempo, existieron en el mundo 7 construcciones arquitectónicas que desafiaron los conocimientos y medios de que disponían los hombres de aquella época. p.p1 {margin: 0.0px 0.0px 6.0px 0.0px; text-align: justify; font: 16.0px Arial; color: #000000; -webkit-text-stroke: #000000} span.s1 {font-kerning: none} En el mundo antiguo, estas maravillosas construcciones fueron relatadas, en especial, por los antiguos griegos, sobreviviendo su historia y sus leyendas hasta nuestros días. Os presentamos esas 7 maravillas en este libro de forma muy gráfica y esquemática. Con...

Durante años se ha insistido en que consumir grasas es perjudicial. Esta afirmación ha provocado un gran malentendido, uno más en la interminable lista de falsas verdades que proliferan en el ámbito de la nutrición. Al eliminar las grasas de la dieta, no solo nos privamos de extraordinarios beneficios para nuestra salud, sino que también saboteamos cualquier esfuerzo encaminado a perder peso. A pesar de que provienen de corrientes marcadamente distintas en lo que respecta a alimentación sana y pérdida de peso, ambos autores –Jonny Bowden, reconocido nutricionista, y Steven Masley,...