"Los invisibles"

This book is a comprehensive, practical presentation of the principles of behavior modification and guidelines for their application. It teaches forms of behavior modification ranging from helping children learn necessary life skills to training pets, to solving personal behavior problems.

A 2014 report by the US Department of Education found that 22 percent of students ages twelve to eighteen had experienced bullying. This cogent narrative provides readers with supportive methods to help a friend who is being bullied and to promote a bully-free learning environment at school. Physical, social, psychological, and verbal bullying are examined, as well as cyberbulling. Readers discover the consequences of bullying both as a target and as a bystander. They also consider ways to intervene in a bullying situation, how to seek adult help, and how to be empowered and recover from...

Sé testigo de los sucesos que cambiaron el curso de la historia. Conviértete en testigo de los grandes momentos de la historia. Conócelos al detalle gracias a las increíbles páginas desplegables de este libro. Descubre su impacto mediante gráficos, fotografías, ilustraciones y mapas detallados. Una exploración visual completa y fascinante de algunos de los acontecimientos que cambiaron nuestro mundo para siempre.

Se dirige a los estudiantes de nivel intermedio de E.L.E. que van a utilizar el teléfono para desempeñar su labor profesional, tanto como emisores de llamadas como receptores.