¿Qué hacen los policías? (What Do Police Officers Do?)

The Industrial Revolution brought important changes to America. People began migrating to cities for work, and immigrants began to arrive in American in larger numbers than ever before as they looked for new employment opportunities. Readers explore the impact of the Industrial Revolution on U.S. migration and immigration patterns. As readers learn about essential social studies curriculum topics, engaging historical images and detailed primary sources hold their interest. This transformative period in American history comes alive for readers with each turn of the page.

La ceremonia de legitimar al gobernante de las comarcas del Anáhuac, consistía en investirle con un pequeño caracol marino. El Ehecailacózcatl sobre el pecho, representaba el honor de ser el Portador Ancestral de los secretos y la sabiduría de La Herencia Toltecáyolt. Las personas lo reconocían como la máxima autoridad. Quetzalcóatl, el hombre, fue el primer Tlatoani en ostentar el Caracol cuando estaba a cargo de Tollan.

¿Conoces la historia de Malala Yousafzai, la niña pakistaní que, en 2014, se volvió la más joven ganadora de un Premio Nobel por creer que la educación es la herramienta más poderosa para mejorar el mundo? Malala cree que todos los niños —independientemente del sexo, de la raza, del origen social o de la creencia religiosa— tienen el derecho indiscutible a aprender. ¡Y no se resignó cuando en su país se les prohibió a las niñas asistir a la escuela solo por ser muchachas! ¡Porque ir a la escuela era lo más importante para ella, y los libros eran su mayor riqueza! Así, ella ...

Students will develop their geometry skills as they study the geometric shapes of modern art and read about the innovative artists who turned the art world upside down. This Spanish book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach geometry concepts. Text features include a glossary, an index, captions, and a table of contents to increase students' vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems, math charts and diagrams, and sidebars provide many opportunities for students to practice...

Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!