C鏔o mejorar tus proyectos colaborativos (Strengthening Collaborative Project Skills)

Five and counting! So far, astronomers have discovered five dwarf planets in our solar system. Pluto, which was once thought of as the ninth planet, is today classified as a dwarf planet. This book looks at the current dwarf planets, characteristics, size, and orbital patterns, as well as the three rules scientists follow to characterize these tiny, round space objects. Every day new discoveries are being made. Who knows how many dwarf planets we will find in the future! This book will allow students to understand that patterns in the natural world can be observed, used to describe phenomena, ...

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.

Recounts the life of the Puerto Rican baseball star from his childhood poverty to his career with the Pittsburgh Pirates, and discusses his humanitarian efforts, his untimely death, and his contributions to the sport.

Abordando con detalle todos los aspectos del viaje a caballo, este libro permitirá tener éxito en la preparación, la realización y la explotación. Contiene una síntesis estudiada de las soluciones europeas a los problemas de viajes largos, pero también la descripción exhaustiva de las técnicas originales provenientes de la experiencia del autor o tomadas de los pueblos caballistas del Nuevo Mundo.