El Pacto Del Mayflower /

Defines levers, explains their functions, and suggests simple experiments to demonstrate how they work.

This inspiring biographical series ties in with elementary history, science, and social studies curricula, providing teachers with a valuable interdisciplinary resource. With these books, young readers will discover historical figures who devoted their lives to making the world a better place, and changed the course of history. Text copyright 2004 Lectorum Publications, Inc.

Young students will be enthralled with compelling portraits of famous figures who devoted their lives to improving the world. Includes historical photos and illustrations.

En este número se analizan los significados e intereses sobre la celebración de los 500 años del descubrimiento de América, desde los dinamismos, mentalidades, estructuras y posiciones institucionales que siguen vigentes. (ITESO), (ITESO, Universidad)

Este libro ilustrado para niños describe el ciclo de vida de la mariposa monarca, desde que la oruga sale del huevecillo, antes de convertirse en una crisálida, hasta que se transforma en adulto.

Describes How Animals Camouflage And Disguise Themselves In Order To Survive, Hunt, And Mimic Other Animals.

Presents a line-by-line explanation of the entire United States Constitution, in English and Spanish. Provides a Spanish translation of the Constitution, historical context and student exercises that approximate the decisions made by the Constitution's authors. Written at the fifth grade level.