Apuntes de matemáticas

Una visión personal para todas las edades de este importante evento que cambió el mundo.En 1989 cayó el muro de Berlín, un muro que no solo separaba las dos Alemanias, sino que dividía la Europa democrática y la Europa comunista. Hoy, 20 años después, el prestigioso ilustrador checo Peter Sís, por medio de sus diarios, comentarios y sobretodo ilustraciones, nos da a conocer el antes y el después de ese suceso tan importante de la historia reciente.

"This title introduces students to the world of agriscience with in depth information on how animal science affects our daily lives. It also gives a wide array of careers in this growing field, from biologists to geneticists, to zoologists"--

Describes which animals are loud and which are quiet, including such creatures as cicadas, whales, mice, and fish.

Deserts are the driest places on Earth, but they’re full of life! Cacti, kangaroo rats, shrubs, foxes, and more have found ways to adapt to the extreme temperatures and dry conditions of deserts around the world. Readers learn about many of these adaptations as well as the major features of the desert biome. Simple maps highlight some of the biggest deserts, helping readers learn map skills. Full-color photographs reinforce accessible information about the desert ecosystem, including a concluding message of conservation.