Algoritmos: la base de la programación de computadoras (Algorithms: The Building Blocks of Computer Programming)

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...

Over the years, people have looked for ways to improve our imperfect sight. This has led us to the world of optics, which is the study of light and how it travels. What are some of these innovations that have changed how we see the world, and how do they work? Find the answers to these questions with this Smithsonian Informational Text! Created in collaboration with the Smithsonian Institution, this text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step...

Discusses the things money can buy, what forms money can come in, including cash, check, and credit, and what a budget is.

Te has preguntado alguna vez; ...por qué el corazón es el símbolo del amor? ¿Quién fue san Valentín en realidad? ¿Por qué se representa a Cupido con los ojos vendados? ¿Por qué las novias lanzan el ramo el día de su boda? ¿Por qué regalamos rosas rojas? ¿Por qué se lleva la alianza en el cuarto dedo de la mano derecha? En este libro encontrarás las respuestas a estas y a otras muchas preguntas relacionadas con el amor.

Presents poetry by the editors and by poets from Puerto Rico, Mexico, and Argentina, along with traditional verse.