150 Problemas de Matemáticas para Cuarto de Primaria (Tomo 1)

Este libro es el Tomo I de la Colección de Problemas de Matemáticas para 1º de Primaria, organizada en progresión de dificultad. Contiene 150 problemas con los que poner a prueba los conocimientos matemáticos de los niños de este curso. Hemos desarrollado otras series centradas en el dominio de la ortografía, el aprendizaje de las matemáticas en educación Primaria y la estimulación temprana de los niños de 3 a 5 años.

Winning the American Revolution was just the first step. After defeating Great Britain, the American colonies were united in name only. How would this independent nation be governed? During the summer of 1787, representatives went to Philadelphia to solve the problem. The result, the U.S. Constitution, created a new government, establishing the foundations of a free nation and setting a new course for history.

Junípero Serra was an influential Franciscan missionary who created missions that stretched from San Francisco to San Diego. His impact on California is still felt-and debated-today. Introduce students to his life with this nonfiction biography that builds students' reading skills and promotes social studies content literacy. The dynamic primary source maps, letters, and images provide authentic nonfiction reading materials and keep students interested in learning. Text features include a glossary, index, captions, sidebars, and table of contents. This book connects to California state...

There is growing concern over how we behave and interact online, from fighting, incivility, rudeness, and even criminal behaviors like cyberbullying, to simply adapting old forms of etiquette to a new landscape. This book, updated from an earlier resource, provides younger readers an introduction to this timely topic, a subject that they are both engaged in forming themselves as "digital natives," and one they also often require guidance in. It informs readers about the polite and productive use of social media networks and mobile platforms and discusses pressing issues of etiquette within...

La crisis obliga a una familia a tener que pasar las vacaciones en la casa de la abuela, en el pueblo, algo que a los hijos no les hace ninguna gracia. Pero lo que parecía que iba a ser un verano aburrido se convierte, para los dos hermanos, en una aventura que nunca olvidarán: la abuela baja del desván una antigua casa de muñecas, de cuando ella era niña, que se convertirá en el escenario de un misterio que los pequeños se empeñarán en resolver, y más de un susto les deparará su investigación.