¡Citado!:Identificar la información creíble en línea (Cited! Identifying Credible Information Online)

Describes the U.S. Army Rangers, including their missions, vehicles, weapons, equipment, and duties. Written in English and Spanish.

One of the most popular narrators of his time, Arthur Conan Doyle, was a visionary man with attitudes which were far ahead of his time. In this book we will know in depth his biography, his work, beyond the creation of the illustrious Sherlock Holmes, and his spiritualistic inquisitiveness.

Mrs. Frizzle's class investigates the disappearance of the salmon from the sea and in the process learn about migration.

Mathematics constitutes ideal material for exercising the art of learning and thinking. For this it is necessary that the classroom has a stimulating atmosphere which requires determined attitudes and beliefs. The book combines theory and practice and responds to questions such as these: to think in the mathematics class? on what does the knowledge of solving problems really consist of? what are the beliefs and which are the most common ones among the students? how to diagnose, evaluate and, in some cases to modify, the systems of beliefs of the pupil?).