El mundo de Bac

Describes the frogs, toads, and salamanders of Mexico's Yucatan Peninsula, looking particularly at the wide variety of adaptations found in the few species that dwell there.

Haz trucos mágicos y al mismo tiempo experimentos científicos con objetos y materiales domésticos. ¡Asombrarás a tu familia y a tus amigos! Con Ciencia mágica en tu cuarto te convertirás en un maestro ilusionista, desafiarás los poderes de la memoria, crearás una tormenta ¡y le pondrás los pelos de punto a mamá! El juego de la ciencia es una colección diseñada para que los niños aprendan jugando. En cada libro se encuentran las claves de la ciencia más elementales que permitirán a los jóvenes inventores descubrir un universo fantástico.

An introduction to taipans, snakes from Australia and New Guinea, describes the three different kinds of taipan, physical characteristics, life cycle, habitat, and predatory behavior.

For thousands of years, militaries around the world were limited to male soldiers. However, throughout history, brave women have stepped out of the background and onto the battlefield. This biographical text covers the important women who’ve broken ground in the military. Famous historical figures such as Joan of Arc, Clara Barton, and Florence Nightingale are covered in depth, while the stories of modern-day heroes are presented to show how women are still affecting change on the front lines. A comprehensive timeline, fact boxes, and historical and modern images complete this...