26 Problemas resueltos de navegación astronómica para capitanes de yate

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...

Nadat twee tieners in het Texas van de jaren zeventig van de 20e eeuw het lijk van een verminkt meisje hebben gevonden, komt hun leven in gevaar.

Lo confieso: yo, Fabio MNZ, soy un loco de los enigmas sin resolver. Me encantan los misterios grandes, los misterios chicos... e incluso los que al final no son tan misteriosos. Así que a veces, si no hay algo raro, ¡me lo invento! Seguro que hay cosas que nunca te has planteado... ¿Existen los fantasmas? ¿Por qué los extraterrestres tienen la cara ovalada? ¿Quién se esconde detrás del Fabio que ves en tu pantalla? Pues yo sí me lo planteo a diario. Porque te voy a contar un secreto: todos los días me pasan cosas que no tienen explicación. MUY FUERTE, ¿verdad?

Take a virtual tour of the Smithsonian! With this Spanish book, you’ll spend a day in the life of a bird keeper and learn how they are “hatching” new plans to help endangered birds. English language learners will read about how an egg hatches, the incubation period, and bird species such as the Kiwi, the emperor penguin, and the Guam rail. Created in collaboration with the Smithsonian Institution, this STEAM book will ignite a curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that is perfect for makerspaces and that guides students...