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...

A dictionary tailored for the Latin American market is an ideal supplement to the middle school curriculum and includes up-to-date definitions, example sentences, synonyms and antonyms, and more. Original.

Simple text and photographs introduce the concept of symmetry as displayed by familiar creatures and objects.

Sally is an incredible singer but she'd rather join a nudist colony than sing in public. That is until she ventures to New York where a wild summer of love and loss changes her forever. Sally returns home to London, but as she's about to embark on her new life, a beautiful man turns up on Sally's doorstep.

Every day, living things grow and change. How do they do it? Find out by exploring the life cycles of various animals. This nonfiction Spanish book teaches students important scientific concepts and terminology. The diagrams, sidebars, text features, and colorful images will keep students connected to the text. Aligned to state and national standards, the fun lab activity provides a real-world learning experience that supports STEM instruction. Keep students reading with this fascinating Spanish book!