Apuntes de matemáticas

"Como no nos ayude Dios, estamos perdidos," grito el capitan Morris en medio de la tempestad. Hudson Taylor sabia que el experto marino estaba en lo cierto. La tormenta no solo amenazaba con hundir el Dumfries, sino tambien su esperanza de divisar la costa de China, el pais al cual Dios le habia llamado. Hudson sobrevivio los peligros de la primavera travesia a su querida China. Decidido a obedecer a Dios, y confiando en la provision de aquel que le habia llamado, supero las persecuciones y se sobrepuso a las circunstancias personales mas dolorosas. Todo con el fin de llavar la verdad de Dios ...

Read about the kinds of jobs that people do as engineers, and how they use math, science, and creative thinking to solve problems.

Explains, in simple terms, the reasons for skin color, how it is determined by heredity, and how various environmental factors affect it.

You re growing up and your body is changing. If you re a girl, you re likely experiencing the start of menstruation, your breasts are making themselves known, and you re noticing new hair that you might want to be rid of. If you re a boy, you may be experiencing something strange as you sleep, or sweating a lot and not wanting to shower. This book is a complete guide to the terrible and marvelous world of puberty."