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

Some people are afraid of mice, but these tiny critters are full of interesting facts. Through both English and standard Latin-American Spanish, learn how little mice are taken care of and how some of these itty bitty animals are even kept as pets or used to run tests. From tiny pink pups to wild mice invading your home, these animals will help readers learn definitions and early concepts with the use of full-color pictures and a great picture glossary. Strong picture-text correlation aids in comprehension Reading level supports beginning readers Picture glossary helps develop vocabulary...

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 historical events. Students will learn about Alta California by examining the maps, letters, images, photographs, and art that emerged during the Mexican rule of California. 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 their...

Camile, Deirdre, Edith y Leonor son las protagonistas de la saga rom�ntica ambientada en la �poca Victoriana Las feas tambi�n los enamoran, cuatro historias que demuestran que el amor se rige por su propia l�gica. En la era victoriana Camile, Deirdre, Edith y Leonor, unas protagonistas f�sicamente imperfectas, son capaces de sobreponerse a los prejuicios de la sociedad, de cuyos est�ndares de belleza est�n alejadas. Como cualquier mujer, sienten, aman y sufren, pero para alcanzar la felicidad deber�n vencer obst�culos como la terquedad, el resentimiento o las inseguridades,...

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther. This 6-Pack includes six...