Los castillos de Trajano

"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."

Surveys the life of Sojourner Truth, who escaped from slavery and became famous as an advocate of equal rights for women and blacks.

¡Descubre los secretos de la ciencia con «Futuros Genios»! ¿Sabes qué son los virus, dónde viven y cómo? ¿Sabes por qué a veces es tan complicado luchar contra ellos? ¿Y sabes cómo se hacen las vacunas? Acompaña a Valentina y a la vaquita Pasteur en una nueva aventura ¡y lo aprenderás todo sobre los virus y las vacunas! «Futuros Genios» es una colección pensada para compartir un momento de lectura y aprendizaje en familia. A través de ilustraciones sencillas y divertidas, Carlos Pazos, divulgador científico conocido por su blog Mola Saber, explica las nociones básicas de...

Introduces readers to amphibians and the concept of classes of animals. Simple text describes the common features and behaviors of amphibians as well as offering many examples of creatures in this group.