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You re growing up and your body is changing. If you re a girl, you re likely experiencing the start of menstruation, your breasts are making themselves known, and you re noticing new hair that you might want to be rid of. If you re a boy, you may be experiencing something strange as you sleep, or sweating a lot and not wanting to shower. This book is a complete guide to the terrible and marvelous world of puberty."

Introduces readers to reptiles and the concept of classes of animals. Simple text describes the common features and behaviors of reptiles as well as offering many examples of creatures in this group.

Take a tour of the world's most fascinating landmarks! The Gateway Arch, Big Ben, the Pyramids of Giza, and the Sydney Opera House are just a few of the landmarks that students will learn about in this high-interest book. This nonfiction math book combines math and literacy skills, and uses real-life examples of problem solving to teach subject area content. The full-color images, engaging sidebars, practice problems, and math diagrams make learning arithmetic concepts relevant and fun. Text features include a table of contents, glossary, and index to increase understanding of math and...

An eye-opening look at the workings of the solar system En este ejemplar los ninos encontrarán la historia del universo, descrita con ilustraciones amenas y entretenidas El día y la noche (cuando sale el sol y la luna Un ano de viaje (el movimiento de la tierra en el espacio). Las cuatro diferentes estaciones de la tierra. La función del sol en la tierra (su influencia en las flores y en los animales). La tierra nuestro planeta (descripción de la tierra, sobre sus habitantes y su forma). La luna (su tamano, su aspecto, los viajes que se han realizado y que hay en ella). Los eclipses (como ...