La historia de los sistemas numéricos: Valor posicional (The History of Number Systems: Place Value)

María no puede ir al colegio porque tiene mucha tos. Sus padres trabajan, así que la solución es contratar a Gerda como canguro. Pero, lo que María no entiende es que sus padres la hayan elegido. ¿Es que nadie se da cuenta de que es una bruja? Un libro que refleja la importancia de no dejarse llevar por las primeras impresiones.

¿Te gustan los acertijos, los misterios y las rimas? Este libro contiene 303 adivinanzas que te harán estrujarte la sesera y demostrar a los demás tu inteligencia. No dejes que las palabras te engañen ni que las rimas te confundan. ¡La diversión está asegurada! 303 adivinanzas para no aburrirse, escritas con el talento de Antonio Gómez Yebra e ilustradas por Anna María Hermoso.

The Spanish-language edition of an informative, inspirational picture book biography about twins Juli n and Joaquin Castro, who rose from poverty to become leaders for positive change in America. The story of political powerhouse twins Juli n and Joaquin Castro began in the small room that they shared with their grandmother Victoriana in San Antonio, Texas. Victoriana crossed the border from Mexico into Texas as a six-year-old orphan, marking the start of the family's American journey. Her daughter Rosie, Juli n and Joaquin's mom, was an activist who helped the barrio through local...

How do you truly engage students in learning history? When students make personal connections to the subject, they're much more motivated to learn. This Spanish book provides firsthand accounts of history that give personal insights into what life was like during Westward Expansion. Students will learn about the reasons people headed west, the gold rush, the Homestead Act, Manifest Destiny, the Oregon Trail, and more. With a visually appealing layout, this book features captivating text, fun facts, sidebars, and time lines that help students grasp the essential concepts they need to know at...