Fósiles y dinosaurios

In what ways are the branches of government like a basketball game? How can a school yard game's rules liken themselves to a constitution? Through engaging analogies and introductions, our new Spanish-language government series gets English language learners ready for election 2008. Correlated to the fourth and fifth grade social studies curriculum, My American Government introduces students to how our government works. Students learn about the U.S. Constitution, the branches of government, citizens' basic rights, and how we elect our leaders.

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.

An introduction to the educational background, equipment, clothing, and various duties of a construction worker.

Para quien encuentre este libro, mi nombre es Dipper Pines, ¡y traigo serias advertencias acerca de un pueblo lleno de horror, misterio y sucesos sobrenaturales! Para sobrevivir, escribí esta guía con tips y trucos para lidiar con rarezas. Y hablando de rarezas... ¡HOLA! ¡SOY MABEL! Dipper me prometió que, si dejaba de brincar en su cama, ¡me permitiría ayudarle con su libro! Tengo unos tips INCREÍBLES, por ejemplo, cómo comer lo que se supone que no debes, tejido de supervivencia de contacto total, ¡y cómo hacer tu propia mascota de papel! ¡Guau! Mabel, ¡estás arruinando mi...