La historia de: los sistemas numéricos: Valor posicional

Learn the history of number systems with this engaging Spanish book! This text combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. Students will learn place value while reading about the number systems of the Egyptians and Romans, and also learn important vocabulary terms like cuneiform, binary systems, roman numerals, and more! The full-color images, math charts, and practice problems make learning math easy and fun. The table of contents, glossary, and index will further understanding of math and...

La fabulosa historia de ocho princesas que decidieron cambiar el cuento que les habían contado. Princesas del rock, del cine, de las estrellas, de las letras..., de la vida misma. Princesas que no nacieron, que se fueron haciendo por el camino hasta conquistar su propio reino. Princesas increíbles que, como tú, inventaron otra forma de ser princesa. Patti Smith, Karen Blixen, Malala, Michelle Obama, Kathy Switzer, Mary Quant, Penélope Cruz y, por supuesto, tú. Un libro mágico que te ha reservado un espacio para que lo completes con tu propia historia.

Divertidas adivinanzas protagonizadas por animales de todo el mundo. Somos grandes, somos chicos, Tenemos pelos y picos. Somos peces, somos aves... Hay de todo, ¿no lo sabes? Venga, venga, adivina, Soy un reno o una sardina. Animales, animales, Animales especiales, Soberbios, fenomenales, Somos todos colosales. Formato Fixed Layout especial para tabletas.

As a land that’s constantly in flux, Earth sometimes reveals clues about the plants, animals, and other organisms that lived long ago. Fossils teach us much about what life was like millions of years ago, answering the questions of how Earth changed and maybe even why it changed. This essential Earth science topic is thoroughly explained through manageable text, fact boxes, informational charts and diagrams, and a glossary and index. Readers will become young Earth detectives by the time they’re through with this text!

Beginning readers will be captivated by the creatures they meet in this Spanish translation of Prehistoric Creatures. The simple text describes ancient animals that swam the seas, soared through the skies, and roamed the Earth long before people existed. Each book describes a group of dinosaurs that shared one or two fascinating features. Dazzling illustrations help bring these amazing creatures to life!