San José, el más santo de los santos

As they say, necessity is the mother of invention, and this book introduces readers to 14 women who invented very useful, helpful items. They include Chicago native Margaret Wilcox who invented the car heater, Indiana native Marion O'Brien Donovan who invented disposable diapers, Pennsylvania native Stephanie Kwolek who invented Kevlar, and Austria-born actress Hedy Lamar whose secret communications systems led to the creation of WiFi, Bluetooth, and GPS.

Navigation instruments have changed over time. Lodestones, sunstones, and sextants helped early navigators find their way. Modern technology makes navigation more precise than it has ever been. But the roots of navigation still remain. Created in collaboration with the Smithsonian Institution, this Smithsonian Informational 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 of the engineering design process and is perfect for makerspace activities. It ...

Con una voz íntima que modula sobresaltos y nebulosas, Ana María Matute nos enfrenta a las experiencias de un grupo de jóvenes, casi niños, a quienes la guerra civil ha despojado de cualquier resto de su anterior universo infantil. El escenario escogido es una Barcelona de soldados y mujeres mal pintadas, de refugiados y mendigos, de gentes ocultas que intentan sobrevivir día a día en medio de los escombros, la luz blanquecina de los reflectores, los bombardeos y la amenazada espera. Pero más allá de un tiempo y un espacio concretos, el propósito de la escritora es presentar a unos...

What is matter and where can it be found? Everything in the world is made of matter, whether it is a solid, a liquid, or a gas. Important ideas about matter such as volume, mass, and how matter changes state are conveyed through a series of easy-to-do experiments.