¿Cuántos Agujeros Tiene Un Anillo?

This book is a comprehensive, practical presentation of the principles of behavior modification and guidelines for their application. It teaches forms of behavior modification ranging from helping children learn necessary life skills to training pets, to solving personal behavior problems.

This Spanish-language series presents the complete range of math concepts and skills students are expected to master during the first grade. The series moves sequentially, from easiest to hardest concepts, with each book covering a different math topic. The first volume reviews the math concepts students learned in kindergarten. The next six books cover counting, adding and subtracting, tables and graphs, money, patterns, and measuring. The eighth volume is a summary of the math concepts students have studied throughout the year. Each book presents situations that show the relevance of math...

Michelangelo, the world-renowned artist who painted the Sistine Chapel's frescoes and sculpted Moses, David, and the Pieta, is the subject of this beautifully written historical novel. Text copyright 2004 Lectorum Publications, Inc.

A Tadeo le encantaría que sus colegas arqueólogos le aceptasen como a uno más, pero siempre acaba liándola: destroza un sarcófago y desata un conjuro que pone en peligro la vida de sus amigos Momia, Jeff y Belzoni. Con todos en contra y sólo ayudado por Sara, Tadeo emprenderá una huida llena de aventuras, que le llevará de México a Chicago y de París a Egipto, para encontrar la manera de acabar con la maldición de la momia.