La antigua Roma (Ancient Rome)

Wind Power: A waving flag, blowing leaves, a kite soaring through the skyall are moved by wind power. Wind is also our fast-growing source of energy. Find out how wind forms and the different ways we may use it in the future.

Different colors are all around us, and this series explores what they look like and where they can be found. Students identify common colors from everyday life, such as red, blue, green, yellow, and how to describe them. They also learn to classify colors by examining what types of objects display each color. Consistently placed and leveled text helps to ensure subject matter is clearly understood.

What causes sound? How does sound travel? Sound begins when matter vibrates. Without this vibration sound could not move and nothing would make any noise. Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments that will appeal to readers of all ages.

"Descubre las civilizaciones del valle del Nilo: desde la corte del faraón a la vida diaria de los obreros"--Cover.

Dado el lugar preponderante que ha ido ganando el desarrollo y fortalecimiento de competencias en los estudiantes que se preparan como futuros profesionales, así como la manera de evidenciar el avance de dichas competencias, la evaluación de los aprendizajes en la educación superior constituye un tema que reviste cada vez mayor relevancia. En este sentido, las nuevas tendencias y teorías sobre evaluación de los aprendizajes, abordan el rol central que esta tiene, como elemento constitutivo fundamental para la mejora de los procesos de enseñanza y aprendizaje, resignificando importantes...