Mi libro gigante de máquinas

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...

¿Qué es eso que oculta la anémona de mar? ¡Un pez payaso, por supuesto! Este título introduce a los lectores jóvenes a estos lindos e icónicos habitantes del océano. Las fotos frescas y vibrantes ayudan al aprendizaje visual, mientras que las preguntas de pensamiento crítico y un glosario de fotos ayudan a desarrollar habilidades de aprendizaje de no ficción. What's that hiding by the sea anemone? A clown fish, of course! Now in Spanish, this title introduces young readers to these cute and iconic ocean-dwellers. Carefully leveled text and fresh, vibrant photos aid visual learning,...

Estructurado en doce unidades; Enfoque comunicativo; Estudio inductivo de la gramática; Resumen nocio-funcional.

Readers will be amazed to discover that every time they climb onto bicycles and ride like the wind, they are defying gravity! This book explains the physics and history behind bicycles, skateboards, and surfboards. Readers learn what happens from the simplest movement of rolling forward to more complex tricks and stunts of jumping and spinning. Readers will never look at bikes, skateboards or surfboards the same way again.