Experimentos sencillos sobre el tiempo

"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."

«Me gustó aquel sitio por su excelente café, el agua pura, las tazas y los vasos limpios, la dulzura de Qaránfula, la grave dignidad de los ancianos, la vitalidad de los jóvenes y la belleza de la chica.»Así describe el narrador (acaso el mismo autor) el ambiente y los personajes que frecuentan el Café Karnak, cálido punto de unión entre el pasado y el presente. Cuandno sin previo aviso tres jóvenes dejan de acudir al café, Qaránfula, su dueña, una bella mujer madura que fue bailarina, empieza a investigar. Descubrirá sus historias entrelazadas y la cara más dura de la...

Have you ever seen a skyscraper that is shaped like an elephant? How about one that looks like waves? Students will learn how to measure area while engaged in reading about the world's coolest skyscrapers! This Spanish book uses real-world examples to teach math concepts, and incorporates nonfiction reading to increase vocabulary and comprehension skills. The practice problems, graphs, and sidebars provide many opportunities for students to practice their developing math skills, and apply what they've learned to their daily lives. Essential text features like a glossary, index, and table of...

Read this book to find out about eyes and how they differ from animal to animal. This book uses simple, repetitive text to teach children about eyes using basic vocabulary and stunning photographs that show how eyes differ across a diverse selection of animals, including humans. Children learn what eyes are for, where they are found, and what eyes look like.