Cristóbal Colón (Christopher Columbus)

Quinto título de la colección "Enigmas". ¡Nuevos enigmas para resolver! Pon a prueba tu capacidad para resolver misterios, esta vez con 25 enigmas de la ciencia. Cada enigma responde a una teoría o principio científico. Resuelve los misterios y conviértete en un verdadero científico. ¡Juega, experimenta y aprende!

This magnificent book uses beautiful photography to help young children understand why some oceans are warm and some are cold, which kinds of plants and animals live in oceans, and how the bodies of ocean animals are built to help them glide through water. Children will be delighted by the images of seals, penguins, polar bears, dolphins, and more.

Through hard work and determination, Lizzie Johnson built one of the largest cattle herds in the country, earning her the nickname "Cattle Queen of Texas." This interesting and inspiring biography highlights the life of Lizzie as she made her way to being one of the most famous cattle ranchers of her time. Through the appealing images and fascinating facts, readers will learn about Lizzie's journey across the Chisholm Trail and how she used brush popping to help grow her large cattle herd. The easy-to-read text and accessible glossary and index help readers navigate their way through this...

No town or city could be built if the builders didn't understand the concepts of perimeter and area. Students will use perimeter and area to build towns and cities and design homes and parks in the book, Pueblos y ciudades (Towns and Cities). At home or in the classroom, this nonfiction book will engage students in learning measurement and geometry, and how to grid patterns, through fun practice problems and diagrams.