¿Qué le pasa al microscopio?: Resolver el problema (What's Wrong with the Microscope?: Fixing the Problem)

In an entertaining way, shows how to add, subtract, multiply, and do long division without a calculator.

Los niños exploraran vehículos del rescate incluyendo un camión de bomberos, ambulancia, coche de policía, helicóptero, y mas con este colorante libro que ofrece fotografías reales. Estudios revelan que a pequeños lectores les resulta mas fácil asociar los vehículos de la vida real en fotografías a diferencia de ilustraciones. Desde un camión de bomberos hasta un barco guarda costas, este libro muy útil tendrá a los niños ¡listos para el rescate! Otros libros en esta serie incluye: Maquinas Monstruo, Bebés del Corral, y Cucu-aca-ta en el Zoo.

Lara Finch lives a lie. Everyone thinks she is happily married to the faithful Sam. She is actually super bored and misses working. Behind Sam's back, she takes a job in London. Twice a week she takes the sleeper train, where she meets Ellen and Guy. One Friday, Lara disappears from the train without a trace. Her friend Iris does not believe the official story she is told about the disappearance and decides to start her own investigation. Iris cannot believe what she finds out.

The United States grew rapidly from the time of the Louisiana Purchase to the building of the Transcontinental Railroad. All of this expansion came at the expense of Native American populations that had either lived in the region for centuries or been forced there from ancestral homes in the East. Tribes memorably fought on their own and together in an doomed effort to retain the land and a lifestyle that had long sustained their families. This book outlines some of the major conflicts of the Westward Expansion, and of the treaties and were signed, and often broken, by representatives of the...