La máscara del Zorro Book + CD

High Beginning. Mexico, 1821. A masked man and acclaimed popular hero, known as Zorro, fights in the battle against colonial oppression in Alta California. From the reader series Aprende Español Con..., which features stories based on modern films and television series, carefully adapted for Spanish language students. Includes an Audio CD of the text, supplementary materials for teachers, and before and after activities for students.

A foundered Victorian ship looking for the fabled Northwest Passage holds a secret in its icy grave... When Dirk Pitt of NUMAr is almost blown to pieces in a lab explosion, he suspects sabotage. The lab in question belongs to a scientist hoping to use a rare mineral to combat greenhouse gases - but who would want to destroy our one chance to save the planet? However, there are those who will do anything to control such a valuable prize. Pitt's investigations take him to the Arctic in search of a clue to the origins of this precious mineral. There he and NUMAr colleague Al Giordino must battle ...

La realidad está llena de números. Mucho más de lo que crees. Hay un Sol y una Luna. Pero tú tienes dos ojos y dos pies. Un triángulo tiene tres lados y un triciclo tres ruedas. ¿Quieres saber más?

National Historic Landmarks are historic places that have exceptional value illustrating our heritage. The Alamo might be one of the best-known monuments, but reader will learn that there over 45 sites in Texas that are marked as historical monuments.

This collection of four titles approaches the four essential ethical topics of the virtues of listening, prudence, patience, and effort. Each of these virtues is highlighted through illustrated mini stories so children can understand the importance of nurturing and strengthening them in themselves and in others.