De visita en el correo (A Trip to the Post Office)

Design a flexible protective layer for a space suit. Space suits have come a long way. The look and function of space suits has evolved over time, but their purpose has always been the same--to keep astronauts safe. From the first suits worn during the Mercury missions, to the latest suits being tested by NASA, there have been great improvements. Learn all about the science behind space suits and how they have changed over time. Created in collaboration with the Smithsonian Institution, this Spanish Smithsonian Informational Text builds reading skills while engaging students' curiosity about...

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...

Introduces the concept of heat, how it's created, how it affects materials around it, and how heat is used.

"Cuento didáctico complementado con canciones, rimas y una pequeña pieza teatral, para niños de a partir de 5 años que explican, a través de las divertidas clases y excursiones de nuestra maestra Teresa, el origen y la elaboración del arroz. Los alumnos de Teresa quieren saber de dónde viene el arroz, el alimento más consumido en el mundo. Así que visitan un arrozal, donde descubren que crece en lugares cubiertos de agua, y después una fábrica de arroz. Únete a la clase y apréndelo todo sobre el ciclo del arroz."--