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

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.

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.

Explore the lifecycle of a butterfly and learn about the transformation of caterpillars into beautiful butterflies. The connection to language arts is the rich vocabulary related to butterflies, caterpillars, and their transformations.

Una guía optimista para cuidar y proteger nuestro planeta. Nadie quiere pensar en la basura (normal, da asquito). Pero aunque no te des cuenta, los desechos ya forman parte de nuestras vidas. ¿De donde sale la basura y dónde acaba? ¿Cuánto tarda en descomponerse? ¿Y qué podemos hacer para ayudar a nuestro planeta? Prepárate para cambiar cómo ves los residuos y cómo luchas contra ellos desde casa. Prepárate para ayudar a tu planeta.

Kids often play with magnets, yet they don't learn how these playthings work for many years. Practical knowledge from their play can help them learn more about magnetism, and so can this book. Specially written for those with reading challenges or readers looking for a review, the main text covers important vocabulary, magnetic fields, and a discussion of why metals and magnets come together. Diagrams and succinct fact boxes offer additional ways to learn each concept and explain some ideas in greater detail.

Ground s’enfronta al xoc de l’art contemporani plantejant, a manera de reflexió filosòfica, aquelles preguntes «grolleres» que semblaven confinades en la resposta de l’home del carrer o del crític reaccionari: no és una xorrada aquesta pila de rajoles al museu? No obstant això, la seua intenció no és fer-nos prendre partit a favor o en contra de determinades obres d’art del Minimal o del Conceptual. El que batega al fons del llibre de Ground és una defensa de l’art contemporani quan reivindica la seua intel·ligibilitat com un tret centralment constitutiu d’aquest. Una...