Chicos Y Altos/Short and Tall

From art and architecture to politics, philosophy, and mathematics, "western civilization" owes a great deal to the achievements of ancient Greece, but what do we really know about this long-gone civilization? How did geography influence the politics of the Greek city-states? What's the difference between an agora and an acropolis? This book takes readers several thousand years into the past, when independent city-states ruled the Mediterranean Sea, to find the answers. Full-color photographs and maps, accompanied by accessible text, introduce readers to the many contributions the ancient...

A simple biography of the naturalist who founded the Sierra Club and was influential in establishing the national park system.

Que Hay is the market-leading Spanish course for 11-14 year olds across the Caribbean. Newly updated, it is as relevant and lively as ever. This comprehensive course follows an immersive approach that encourages students to enjoy and full engage with the languages and culture, providing a solid foundation in everyday Spanish and ideal preparation for studying Spanish at CSEC.

Readers won't have to disassemble their favorite toys to discover what makes them work. This book explores electric, magnetic, and motion-powered toys from design to function. It introduces readers to the six simple machines and explains how they use force and motion to do work. Not every toy is a technological marvel. Readers learn about time-honored favorites including the rocking horse, Slinky, and rattles.