¿Qué Son Los Bienes y Servicios? (What Are Goods and Services?)

This book tells the story of farmers and life on a farm. What do farmers do? What tools and equipment do they use? Who helps them? Livestock, crops and daily chores are perfectly captured in descriptive photography. With full-color, full-page photographs throughout plus straightforward and engaging text, the I Want to Be ... series is an appealing introduction to a broad spectrum of occupations. The series gives young children a realistic insight into the working day of adults. Easy-to-read captions and color photographs of women and men from different cultures help children understand what's ...

Este libro ilustrado para niños muestra cómo trabaja el cerebro y la nariz para que se den cuenta de la presencia de los olores.

Today’s computers come in all shapes and sizes, but not many people actually know how they’re made. The journey from circuits and wires to a ready-to-use computer is a fascinating exploration of science and engineering. Readers get a look inside their laptops, desktops, and even their tablets as they’re shown step-by-step how these electronic marvels are assembled. Readers will love knowing what goes on inside their own machines, and color photographs and simple instructions will show them how they can build their own computer!

Explains what mathematics is and how it feels to do math, and shows some basic mathematical concepts such as sorting and measuring.