México ; y, Viaje al país de los tarahumaras

Why do continents matter? From economics to weather science—and everything in between—knowing the characteristics of the continents expands readers’ perspectives in every school subject. This fundamental information is a building block of many future lessons and an essential part of elementary education. This book presents a focused, clear, age-appropriate look at Earth’s continents that young readers are sure to find both informative and interesting. This volume is also packed with colorful maps that are labeled and explained to foster young readers’ comprehension of this important...

Un libro completamente fotografico con ideas, tecnicas y mucha inspiracion para utilizar los crayones en el cuerpo. Faciles de usar para las manitas de los niños. Contiene seis crayones de gran calidad no toxicos y son facilmente lavables, ademas se puede

Una obra dedicada a la vigencia del pensamiento del filósofo escocés David Hume debería empezar sospechando de lo que llamamos filosofía, para terminar dudando de la propia validez de los principios morales. Fiel a su estilo claro y conciso, Felipe Martínez Marzoa resume las aristas de este filósofo de la sospecha.

Readers may never expect that they might free fall to Earth, but if they have ever dived into a pool, that's exactly what they've done. This book shows readers how Newton's three laws of motion affect divers, skydivers, and mountain climbers' movements. Readers discover who uses gravity, and who works against it, and all other forces that contribute to a successful dive or climb. After reading this book, readers can decide if they will ever be interested in engaging in one of these extreme sports.