Cómo funcionan los imanes (How Magnets Work)

People have been sending mail for a long time. But how they do it has changed a lot! Read about the history of mail as you learn to collect data. This Spanish math book combines math and reading skills and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed sidebars, practice problems, and math diagrams make learning data measurement easy and fun. Text features include a table of contents, a glossary, an index, and captions to build vocabulary and increase understanding of math and reading concepts. An in-depth problem-solving section...

Incluye las materias del área de Ciencias Sociales, Geografía e Historia, y su referencia a los temas transversales. Ofrece orientaciones para definir objetivos y hacer el seguimiento del alumnado y para la organización del Centro y del aula. Demuestra que los materiales curriculares, estilos y ambientes de enseñanza pueden adaptarse a las necesidades individuales del alumnado. Dedica un extenso apartado dedicado a los recursos humanos y materiales.

In the United States, the ability to take informed action is becoming increasingly necessary, and difficult. This book delves into the importance of being informed and explains how not all sources of information are equal. Readers are introduced to the scientific method as a way of testing information for credibility. Students will also learn how to turn credible information into action by forming groups, protesting, contacting elected representatives, and possibly even running for office themselves someday.

Families can be big or small, but all resemble each other in one aspect: they have a past and a present that, is also part of a broader history, that of a culture or race, or that of the world. The reader will see that family trees are used both by historians and everyday people who trace generations of relatives. Although family trees imply blood relations, the ties of love and friendship are often just as important.