Nuestro Mundo

Advances in science have changed our world, all thanks to the scientists behind important discoveries. Some of the most important discoveries have come from female scientists, who were as unique for their work as they were for being trailblazers in a male-dominated industry. This text offers a biographical treatment of such important scientists as Marie Curie, Rachel Carson, and Jane Goodall, as well as others who have made it possible for women of the future to have a career in science. Age-appropriate text, fact boxes, historical and modern images, and a comprehensive timeline complete the...

Read Along or Enhanced eBook: Take a trip to the ends of the universe and introduce early elementary readers to beginning astrological ideas and concepts including galaxies, planets, asteroids, and the entire universe. This fascinating title features bright images, charts, diagrams, and informational, Spanish-translated text.

Este libro contiene información ilustrada que describe una época, a fines del siglo XIX, muy importante en la historia de México. En ese tiempo Porfirio Díaz fue presidente de la República y su ejercicio del poder dio nombre a un periodo de la historia mexicana conocido como Porfiriato. Durante su mandato, la economía mexicana se estabilizó y el país experimentó un desarrollo económico sin precedentes: se invirtió capital extranjero en la explotación de los recursos mineros; la industria minera, la textil y otras experimentaron una gran expansión; se construyeron vías férreas y ...

Swamps are one kind of wetland biome. Like other wetland biomes, a swamp’s water must be clean in order for the wildlife in it to thrive. Readers learn the main features of both freshwater and saltwater swamps, as well as where some of the biggest swamps are on Earth. Science curriculum topics such as food chains and conservation make the main content a great complement to classroom learning. Full-color photographs and inset maps aid readers in identifying this interesting biome in the world around them.