Experimentos con la luz

Aunque los mayas desconocían las aplicaciones de la rueda y no utilizaban los animales ni para el trabajo ni para el transporte, lograron crear una de las civilizaciones más brillantes de la historia. A pesar de que dispusieron de una tecnología muy limitada, colonizaron una parte importante de América Central y construyeron impresionantes monumentos.

A flexible suite of resources providing full coverage of the Cambridge IGCSE® Spanish as a First Language syllabus (0502) for first examination in 2015. Written by practising teachers, this workbook helps students further develop the skills acquired through the course. Practical exercises expand and enhance the materials in the coursebook, supporting students through the Cambridge IGCSE® Spanish as a First Language course.

Introduce students to the natural ways that the Earth is constantly changing. This Spanish-translated book includes engaging, primary source documents and images that keep students reading as they build their literacy skills and social studies content knowledge. Informational text features help students navigate the text.

Rudy can't find his favorite sweater. He's looked everywhere: inside the house, outside, and in the apartments upstairs and downstairs. In the kitchen, in the bathroom, here, there . . . where could it be? This enchanting story has flaps, pages with cutouts, and numbers to count.