Matemáticas en el cinturón de asteroides (Math in the Asteroid Belt)

Mars is perhaps the most thrilling planet these days. With rovers exploring its surface and manned missions in the works, people are wondering if Mars is our next home! In this highinterest book, readers will learn more about Earth's neighbor, including what its climate and surface are like, why it's called the Red Planet, and about the recent discovery of water on its surface. They'll learn all this while solving "Your Mission" math problems that complement and support the text. This motivating volume is an engaging way to explore key aspects of science and math curricula.

Poetry illustrated by Felipe Dávalos, Sofia Suzán, María Eugenia Jara, Isaac Hernández, Alain Espinosa, Manuel Monroy, Claudia de Teresa.

"Dino" Don Lessem brings readers face-to-face with various dinosaur species, detailing their habitats, way of life and how they became extinct. An acclaimed dinosaur expert, Don Lessem has written more than 30 children's books, writes a popular dinosaur column in Highlights magazine, and was an adviser for Jurassic Park. Take a trip through dinosaur time to meet these feathered dinosaurs face to face: The Caudipteryx had feathered arms and a tail that looked like a pom-pom! The Sinovenator may have used colorful feathers to attract a mate! The Microraptor may have used its feathers to glide...

Eleven-year-old Jenny, whose family came from Russia to America to start a new life, meets the famous Russian composer on his 1891 trip to the New World and writes about it in her diary.

La astucia de John Chatterton es indiscutible. Después de haber resuelto dos de los más difíciles casos policiales: el de la niña vestida de rojo y el de la misteriosa desaparición de la hijastra, ahora se le presenta un nuevo reto.