Meet five amazing kids who are helping to make the world a better place right in their own backyards! These kids have found ways to help others. And they all do different things. Their stories will inspire you to help others, too! This Spanish nonfiction book introduces students to new vocabulary terms and concepts. It includes important text features such as a glossary, index, and table of contents to engage students in reading as they develop their...

Bridget "Biddy" Mason was an African-American midwife, nurse, real estate entrepreneur, philanthropist, and former slave who influenced the history of Los Angeles and California. Learn about her fascinating life with this primary source biography that builds students' reading skills and promotes social studies content knowledge. The dynamic primary source maps, letters, and images provide authentic nonfiction reading materials and keep students interested...

Hop on that big red truck for a real adventure! Being a firefighter takes a lot of hard work. Early elementary readers learn about the important responsibilities it takes to be a firefighter--from the fire equipment to living in the fire station. With vivid photos and images, a timetable of firefighting history, informational text, and intriguing facts, this book will have readers engaged and eager to learn all about this stimulating occupation.

A grasp of the precision, beauty, and complexity of mathematics requires an understanding of some of the subject's technical aspects. The real number system provides an ideal framework for cultivating such an appreciation, and this detailed investigation of the system offers an accessible introduction. The treatment presumes only a familiarity with the basic properties of natural numbers, although readers must be willing to apply themselves. Proceeding...

A classic text and standard reference for a generation, this volume and its companion are the work of an expert algebraist who taught at Yale for two decades. Nathan Jacobson's books possess a conceptual and theoretical orientation, and in addition to their value as classroom texts, they serve as valuable references. Volume I explores all of the topics typically covered in undergraduate courses, including the rudiments of set theory, group theory,...

Este texto está diseñado para ser una prolongación natural de la enseñanza de varios conceptos matemáticos impartidos en los colegios secundarios. Se tratan los temas de la lógica proposicional, la teoría de conjuntos, el sistema de los números reales y las ecuaciones e inecuaciones tanto polinómicas como logarítmicas y exponenciales. Se realiza un estudio detallado de las relaciones y funciones algebraicas, exponenciales y logarítmicas....

Equations are the lifeblood of mathematics, science, and technology, and this book examines equations of all kinds. With his masterful ability to convey the excitement and elegance of mathematics, author Boris Pritsker explores equations from the simplest to the most complex-their history, their charm, and their usefulness in solving problems. The Equations World bridges the fields of algebra, geometry, number theory, and trigonometry, solving more...

What takes us over rivers and above highways? BRIDGES! Discover why and how they are built and learn about some of the world's beautiful bridges in this book. Downloadable Teacher Notes available.

What structures stretch into the sky and give people places to live, work, and shop? SKYSCRAPERS! Discover why and how they are built and learn about some of the world's stunning skyscrapers in this book. Downloadable Teacher Notes available.

What carries water and helps ships move around the world? CANALS! Discover why and how they are built and learn about some of the world's clever canals in this book. Downloadable Teacher Notes available.