Albert Einstein

Biography Of Marie Curie, Her Discovery Of Radium And Polonium And Her Noble Prize Win For Physics And Chemistry.

Explains, in simple terms, the reasons for skin color, how it is determined by heredity, and how various environmental factors affect it.

An ideal book for young Spanish students; proposes a new progression that promotes language acquisition and consolidation of contents, offers numerous grammatical and lexical and formal practice aid activities within the unit and contains a competency evaluation at the end of each chapter.

Learn how streets are fixed, sidewalks get added, and new schools are built with this Spanish nonfiction book. Perfect for young readers, the book includes a fiction story related to the topic, a glossary, an additional project, useful text features, and engaging sidebars. This 28-page full-color Spanish book describes the many ways individuals can make changes in their communities. It also covers essential civics topics such as leadership and voting, and includes an extension activity for grade 2. Perfect for the classroom, at-home learning, or homeschool, to explore voting, local...

Un libro de referencia para todas las preguntas que chicos y chicas se hacen sobre el sexo, aunque les resulta incómodo hablar de ello. Con textos escritos por profesionales, serio, riguroso, pero al mismo tiempo ameno y divertido. Porque la mejor protección es la información.