Tras las huellas del ADN

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?).

La construcciOn de las pirAmides de Egipto es uno de los sucesos mAs importantes y mAs estudiados de la historia. AsI que nos metemos en la piel del FaraOn Keops y descubrimos sus sueNos de grandeza. En una civilizaciOn en sus albores, con pocos recursos tEcnicos y muchos recursos econOmicos y humanos.

HIGH-INTEREST, LOW-LEVEL: Reluctant readers will be engaged from beginning to end as they explore the responsibilities and skills of the soccer goalie in this 32-page nonfiction book. Side-by-side English and Spanish text and vivid, exciting photos show readers what it takes to fill this key position in soccer. SPORTS BOOK FOR KIDS: Soccer goalies are their team's last line of defense. These players must be quick on their feet to stop the other team from scoring a goal. Learn what soccer goalies do to help their team to victory! INCLUDES: Readers will be hooked from beginning to end with...

¿Sabías que algunos dinosaurios eran tan grandes como un edificio de tres pisos y otros tan pequeños como un gorrión? Unos cazaban en solitario y otros en grupos organizados. ¡Algunos comían piedras! Descubre cosas asombrosas de estas increíbles criaturas. Dani, Evan y Bizcoché quieren contarte todo lo que saben de ellos. ¡Una espectacular guía con más de 100 dinosaurios!