How Do You Measure Time?

Provides an overview of the design, uses, weapons, and equipment of U.S. Navy submarines. Written in English and Spanish.

En una época de multiculturidad, en la que nuestro vecino puede ser de algún país que desconocemos, en la que nuestros hijos crecen al lado de otros niños y niñas de distintos orígenes, la colección «Caballo viajero» nos presenta las particularidades de algunas culturas del mundo de la mano de los personajes de la reina Trotamundos y el caballo viajero.

What does it mean to be a good citizen? Full-page, color photographs accompany real-life examples of good citizenship that young readers will understand, relate to, and be inspired by.

A little child asks the "big question" (grande question) that is never formulated: why are we on earth? and get answers from different people.

Practice nonstandard measurement at the zoo! This exciting, Spanish-translated title encourages readers to practice measuring their favorite zoo animals, such as elephants, giraffes, pandas, and more. A gorilla weighs the same as three men! When a cheetah runs, its stride length is the length of three men! An elephant weighs the same as three pickup trucks! Vivid images, fun practice questions, early STEM themes, and helpful mathematical diagrams make nonstandard measurement entertaining and easy for children to understand.