Julia Vogel 
El peso [PDF ebook] 

Weight is how heavy something or someone is. By measuring weight, people can tell in pounds and grams who has the heaviest
backpack and the lightest lunch. Learn about the tools needed to measure how heavy things are in Weight, an All About
Measuring book. Each book in this series helps children learn basic measuring concepts. Simple, engaging text and colorful
photos help students gain a better understanding of measurement fundamentals and encourage a love of reading.