Quien Fue Amelia Earhart?

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?).

África tiene muchas caras: exótica y misteriosa, peligrosa y cruel, triste y explorada. Pero es mucho más que eso, es el lugar del origen del hombre, una tierra llena de historia y cultura. Es un continente con una geografía variada: 54 países donde conviven hombres y mujeres de culturas diferentes, que se expresan en más de mil lenguas. En África hay muchos países, todos ellos muy diversos, muchas religiones, ciudades populosas, aldeas, grandes líderes, mitos y colores. Estas son las otras Áfricas que se muestran en este libro.

This illustrated book for children and youths explores the design and history of telescopes, advances in telescope technology, and the structure of the space telescope Hubble. It also includes information on other telescopes like the Subaru, the Gemini, and robotic telescopes, and on observatories.

Soccer has been played for over 200 years in hundreds of countries across the globe. While it doesn't always get the same level of exposure that football or basketball enjoy in the United States, professional soccer is one of the world's most popular sports. Soccer has a number of living superstars who have changed the game forever with their talents and achievements. Readers will learn about Marta, often regarded as the greatest female soccer player of all time. The inspirational story of her life, trials, and journey to greatness is sure to turn young readers into soccer fanatics.