Trilobites

Quizá los trilobites no sean tan espectaculares como los grandes dinosaurios. Sin embargo, estos pequeños seres prehistóricos –los cuales vivieron durante el periodo Cámbrico, es decir hace 542 millones de años–, tienen mucho que decirnos sobre el pasado remoto de la Tierra y sobre los seres vivos en general. Su fascinante anatomía, por ejemplo, guarda curiosas similitudes con otros animales y con un sinfín de objetos de uso común hoy en día. Este ameno libro toma a los trilobites como tema para hablarnos de la biología pero también de ingeniería. Los autores se refieren lo...

Simple text and photographs introduce the animals of the Arctic, grouped to provide practice in solving easy addition problems.

A Major catalogue that accompanies the exhibition of the collection of the Museo de la Solidaridad in Chile has been produced In celebration of the centenary of the birth of Salvador Allende. The exhibition / catalogue documents the extensive international collection of fine art in the museum. The first chapter is devoted to Allende as a hommage.

There are all sorts of things to do before a birthday party! Make math practical and fun for young readers, as they read this Spanish-translated story of children planning a birthday. The children will have to consider the number of guests and count things to buy, like invitations, food, and confetti. Young readers will practice their counting skills with the help of engaging images, clear tally marks, and mathematical charts. This fun and practical book will keep children engaged as they learn early STEM themes and help them feel confident and ready to have more fun with math! This 6-Pack...

Discusses the various features of Australia, including its climate, mountains, rivers, lakes, animals, vegetation, coral reefs, flightless birds, population, and cities, and history of the Aborigines.