Analógico y digital

Simple text and photographs introduce the concept of "skip counting," or counting by groups of a certain number, and present items for practice.

"Amphibians have some of the most interesting life cycles on Earth. The metamorphosis frogs, toads, salamanders, newts, and caecilians go through has many steps that readers need to understand and remember. This book offers a concise overview of the general amphibian life cycle as well as representative examples of the many species within the animal group. Most importantly, the accessible language is paired with diagrams of the steps of the life cycle to augment readers' understanding of this topic often found in the science curriculum."

Escritos entre 1924 y 1932, los microgramas son el testamento literario de Robert Walser. Se trata de una colección de 526 hojas y papeles de distinto formato densamente cubiertos de una letra minúscula, escritos a lápiz e ilegibles a primera vista. La minuciosa labor de Werner Morlang y Bernhard Echte, que dedicaron más de quince años a descifrarlos letra a letra, puso fin al desconcierto y reveló como una colección de textos breves, poemas y dramas en verso de incalculable valor literario lo que en un principio parecía fruto de la locura del autor suizo. El propio Walser reconoció...

Learn more about the renowned British scientist, professor, and author who spent his entire career trying to answer the question: "Where did the universe come from?" Stephen Hawking was born exactly three hundred years after the death of the scientist Galileo, so maybe it was written in the stars that he would become a famous scientist in his own right. Although he was diagnosed with a neurological disease at age 21, Stephen did not let the illness define his life. Known for his groundbreaking work in physics, and identified by his wheelchair and computerized voice system, Stephen continued...