La antigua Roma (Ancient Rome)

Wind Power: A waving flag, blowing leaves, a kite soaring through the skyall are moved by wind power. Wind is also our fast-growing source of energy. Find out how wind forms and the different ways we may use it in the future.

When winter hits, many people in colder climates spend most of their time indoors. But what do wild animals do? Some animals spend winters hibernating. Beginning readers will learn what hibernation is, why some animals hibernate and others don't, and how hibernating animals prepare for their long sleep. Full-color photographs grab readers' attention and allow them to draw connections to the narrative. Readers will love learning about this mysterious, restful time in some animals' lives.

This nonfiction Spanish book teaches students about producers and consumers, and introduces them to important scientific concepts and vocabulary terms like nutrient cycle, food web and photosynthesis. The intriguing images, detailed diagrams, and stimulating sidebars will keep students connected to the text. The fun lab activity provides a real-world learning experience that supports STEM instruction. Aligned to state and national standards, the leveled text supports differentiation. Keep students reading with this fascinating Spanish book.

Children often wonder what they were like when they grew up in their mother's womb. Discover the magic and beauty of the beginning of life in nine three-dimensional illustrations of a baby in real size, month by month. This book is a great way to explain to children how their life was in their mother's womb and is the perfect gift for the arrival of a new baby.

La gesta que marcó un hito en la historia samurái. ¡El épico desenlace de la trilogía Chihaya! El levantamiento del emperador por el control de Japón ha fracasado y mientras permanece prisionero en Kyoto los últimos rebeldes que apoyaban su causa se ven amenazados por la unión de las fuerzas leales al shōgun y al clan Hōjō. El enorme ejército avanza implacable desde el este haciendo temblar la tierra de Las Islas Sagradas, pero, en el centro del país, un puñado de samuráis pretende detenerlos el tiempo necesario para que los rebeldes puedan fortalecerse. Dispuestos a sacrificar ...