¿Por qué hibernan los animales? (Why Animals Hibernate)

When rocks change because of environmental conditions, the new rocks are called metamorphic rocks. A rock's chemical or physical makeup may change because of conditions such as temperature, stress, or pressure. Your readers will learn fascinating facts including where metamorphic rocks are most commonly found, the different types of metamorphism, and how metamorphic rocks are identified. Full-color photographs depict these rocks in nature. A helpful graphic organizer shows how these fascinating rocks form.

Diamonds and salt are both minerals, but diamonds are more rare than salt. Curious readers will learn what physical and chemical conditions must be present for minerals to form. They'll discover how minerals are identified and how they are used in daily life. Informative and interesting text presents readers with this science content in a fun way. A graphic organizer shows how different minerals are identified and fact boxes provide readers with exciting supplementary information.

Torcuato, apodado Trescuartos por su aspecto físico diminuto y escuálido, comparte su vida con un hermano gemelo que posee muchas de las cualidades que a él le faltan y con el que lo comparan continuamente. Él cree que no puede tratarse de alguien normal y sospecha si Luis no será, en realidad, su ángel de la guarda, desde el día en que desaparece de su lado y todo comienza a salirle mal.

Students will learn area and perimeter while engaged in reading about a day in the life of a contractor! This Spanish engaging book uses real-world examples to teach math concepts, and incorporates nonfiction reading to increase vocabulary and comprehension skills. The challenging 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 contents will increase students' interest level and their interaction with the...

Partes de las pinturas de Henri Matisse se utilizan para enseñar los colores a los pequeños en este libro de cartón para leer en alto. Azul y otros colores recorre la paleta de colores de Matisse, una obra por página, empezando por el azul y volviendo a él cómo color de referencia. La variedad de formas, escalas y dimensiones mantendrá a los lectores atentos mientras que textos apoyan y mejoran la lectura con comentarios humorísticos. Los niños no sólo aprenderán los colores sino que se acostumbraran a ver estupendas obras de arte en este primer número de la colección Primeros...

Spanish Student Edition offers the complete Student Edition in Spanish to meet the needs of Spanish ELL students.