Refuerzo de matemáticas. ¡Aprende y aprueba! 2 ESO

¿Y si el universo no pesara nada y la materia no existiera realmente? Lo que parecería ser una duda legítima para un erudito místico de los Vedas Indios es, en cambio, un resultado embarazoso de la aplicación de la Relatividad Restringida a las observaciones obtenidas por un grupo de astrofísicos, que han medido la radiación cósmica de fondo de nuestro universo. En los albores del nuevo milenio, el satélite WMAP, más allá de proporcionarnos una medida del cosmos, nunca antes obtenida, ha creado bastantes quebraderos de cabeza respecto al concepto de universo, en el que todavía hoy ...

People have been using shadow puppets to entertain people for centuries. Learn the history of shadow puppets and the "technology" behind them with this STEAM book that will ignite a curiosity about STEAM topics through real-world examples. Created in collaboration with the Smithsonian Institution, this book features a hands-on STEAM challenge that is perfect for makerspaces and that guides students step-by-step through the engineering design process. Make STEAM career connections with career advice from actual Smithsonian employees working in STEAM fields. Perfect for English language...

Families can be big or small, but all resemble each other in one aspect: they have a past and a present that, is also part of a broader history, that of a culture or race, or that of the world. The reader will see that family trees are used both by historians and everyday people who trace generations of relatives. Although family trees imply blood relations, the ties of love and friendship are often just as important.

Readers will have fun learning about basic external body parts in this colorful series that helps them recognize and compare human parts and various animal parts. Each book in this series focuses on one part, explaining what it is, what it is used for, and how it looks on a variety of animals.