¿Dónde está mi jersey?

(back cover) Las tres erres nos ense an diferentes maneras de disminuir la contaminaci n ambiental. Cuando reducimos el n mero de cosas que tiramos, como las bolsas de pl stico, ayudamos a que la tierra donde vivimos est(c) limpia y que el agua que bebemos sea fresca. Cuando reutilizamos cosas, por ejemplo, si usamos ropa que a nuestro hermano mayor le queda chica, ayudamos a conservar recursos. Cuando reciclamos papel, latas y botellas vacas y las llevamos a centros de reciclaje, estos objetos se aprovechan para hacer cosas nuevas. Las tres palabras que comienzan con la letra R nos ense an a ...

Young readers may have heard about the benefits of using and making the most of their resources, but how does that factor into an economic discussion? This thorough discussion defines resources and describes the different types of resources and why some divide them into three categories and others choose four. The book also addresses the concept of scarcity, showing readers how, because all resources have their limits, it is important to use them responsibly and efficiently in a healthy economy.

This high-quality Spanish-language book can be enjoyed by fluent Spanish speakers as well as those learning the language, whether at home or in a classroom. The MathStart series has sold over 1.5 million copies and combines math with fun stories that have real-life applications. In Jacob el constructor, a Level One MathStart, Math becomes child's play as young readers are introduced to the skill of counting on, a first step toward mastering addition. Dos bloques . . . más tres son cinco bloques . . . ¡más diez son quince! ¿Qué puede crear un niño con su imaginación? Este cuento sobre...

A charming picture book features a busy little bird flying back and forth, carrying twigs to the cherry tree.