Ayudar a un amigo con un desorden alimenticio (Helping a Friend With an Eating Disorder)

As a teen who may be worried about certain warning signs a friend is exhibiting, it’s important to know how to recognize and confront an eating disorder. After all, teens are the most impacted group for developing eating disorders. Learn how the pressures of school, dating, and athletics contribute to body image issues and why teens are vulnerable. Explore eating disorders that people commonly have and how they are treated. Readers from grades six through twelve will have a relatable text to help them understand how they can make a difference to someone they care about.

Sesenta autores, desde catedráticos de universidad hasta estudiantes de Secundaria y Bachillerato, nos presentan los cuarenta desafíos que la Real Sociedad Matemática Española propuso con motivo de su centenario.Son cuarenta estimulantes retos que avivan el ingenio. Enfrentándose a ellos, el lector se sentirá un auténtico investigador matemático.Pero no hay que asustarse. No es necesario saber muchas matemáticas. La herramienta esencial para resolver los desafíos es pensar ordenadamente.

How do countries work together? Running a country requires hard work. There is a lot involved. That includes making laws that help people do the right thing. When leaders work together, their countries benefit. This Spanish book introduces 2nd grade students to the concepts of diplomacy, government, and foreign relations. Detailed images in conjunction with easy-to-read text and basic text features provide readers with an inviting reading and learning experience as they build social studies knowledge.

A scientific look at the natural processes that create waterfalls, and where they are likely to form.

El ser humano no está estructuralmente preparado para desenvolverse de forma óptima en el medio acuático, sin embargo, tiene la capacidad de aprender para mejorar su competencia. En este libro se presentan los condicionantes de la estaticidad y del movimiento del cuerpo en el medio acuático, distinguiendo los elementos que son propios del agua de los que son propios del cuerpo, para determinar qué factores son los que se pueden mejorar para optimizar el dominio de este medio. Además, como complemento fundamental, se integran en este proceso las áreas del control motor, la...