Alexander Hamilton

Surveys the life of the American statesman, lawmaker, writer of the Federalist Papers, and first secretary of treasury under George Washington.

Nuestra vida llega a celebrar las primeras 100 copias distribuidas de ¡Canta, Cancionero! Con mejoras y avances de lo que será el futuro, Nuestra vida, llega a tocar una vez más, los sentimientos del lector.

¡Hay nieve en el suelo, y los carámbanos se están formando! Debe ser invierno. A través de fotografías de color descubra qué tipo de actividades la gente hace en el invierno. Las preguntas de pensamiento crítico y otras grandes características hacen que esta edición en español sea una excelente introducción a la lectura de no ficción para niños. There's snow on the ground, and icicles are forming! It must be winter. Through vivid full-color photographs and carefully leveled text, discover what kinds of activities people do in the winter. Age-appropriate critical thinking...

Explore outer space and learn about stars, galaxies, planets, asteroids and how these bodies are all related to one another. Featured in this book are photographs from outer space and related vocabulary.

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!