¿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.

In 1939, a war that would encompass the world began in Europe. Readers will learn about the causes of World War II in this nonfiction Spanish-translated book. The supportive text and fascinating sidebars work in conjunction with the stunning photos and appealing scrapbook layout to provide an enjoyable and enlightening experience that teaches readers about such events and topics as Pearl Harbor, blitzkreig, and concentration and internment camps. Readers will also learn about infamous figures from the war like Adolph Hitler, Sir Winston Churchill, Franklin Roosevelt, and even Rosie the...

La llegada del señor Bunch, tras un largo viaje, no resulta muy alentadora para su hijo Harry, quien se verá obligado a hacer ejercicio y variar la dieta. Pero el talante simpático del chico y su buen corazón le llevarán a protagonizar una misión arriesgada para salvar a su vecina, la anciana señora Lathom. Con la ayuda de una colega, aclarará todo el «jaleo» producido en torno al tejado de la casa de la víctima.

Mitad hada, mitad vampiro ¡y totalmente única! ¡El libro de manualidades de Isadora Moon! Isadora Moon es especial porque es diferente. ¿Quieres ser como ella? Con este libro de manualidades podrás transformarte en hada o en vampiro y crear los accesorios más mágicos e increíbles. Diseña tu propia varita mágica, tu diario de vampiro, una espeluznante invitación de cumpleaños o a tu propio murciélago-mascota.

"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."