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Narwhals are often called the "unicorns of the sea." But these fascinating creatures are members of the whale family. Read all about narwhals as you practice addition. 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 addition 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...

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?).

Los niños pueden conocer y disfrutar de Lope como alguien entrañable y querido, a pesar del tiempo. Logró reunir vida y obra en una simbiosis impar y maravillosa, y lo consiguió, según dice Gerardo Diego, porque era un niño.

Nacido en Madrid en 1940, José Guillermo es licenciado en Derecho por la Universidad Complutense y rector del Real Colegio de España en Bolonia (Italia) desde 1978. Se le debe el hallazgo del manuscrito del Cántico espiritual de San Juan de la Cruz fechado en 1593.También se le debe la recuperación de la gran ópera española Celos, aun del aire matan de Calderón de la Barca con música de Juan Hidalgo. En 2000 publicó La adulteración de ‘La Celestina’, extenso ensayo que trata de recuperar la Comedia de Calisto y Melibea original suprimiendo sus interpolaciones posteriores. Es...