Caídas de agua

Life without Principle se llamó originalmente What Shall it Profit, y fue una conferencia dictada por Thoreau el 6 de diciembre de 1854 en el Hall del Ferrocarril de Rhode Island. Posteriormente, dictó la conferencia cuatro veces más en Massachusetts durante 1855, y una vez más en Nueva Jersey al año siguiente. La versión que tradujimos fue editada por el mismo Thoreau para su publicación en formato impreso, que realizó Atlantic Monthly en 1863, donde recibió su título actual.

California is home to the largest school system in the country. Students will learn about the history of California’s schools and higher education system with this nonfiction text that builds students’ reading skills and social studies content knowledge. The intriguing primary source maps, letters, documents, and images provide authentic nonfiction reading materials and keep students interested in learning. Text features include a glossary, index, captions, sidebars, and table of contents. This book connects to California state studies standards and the NCSS/C3 Framework and features...

Why do some things heat up quickly while others don't? How can heat cause matter to change form from solid to liquid to gas and back again? Heat cannot be seen, but it can easily be felt. Looking at different objects' molecular makeup, this book describes the fundamentals of heat and furthers understanding through a series of easy experiments.

Have you ever seen a skyscraper that is shaped like an elephant? How about one that looks like waves? Students will learn how to measure area while engaged in reading about the world's coolest skyscrapers! This Spanish book uses real-world examples to teach math concepts, and incorporates nonfiction reading to increase vocabulary and comprehension skills. The practice problems, graphs, and sidebars provide many opportunities for students to practice their developing math skills, and apply what they've learned to their daily lives. Essential text features like a glossary, index, and table of...