1000 problemas de química general

Teach students about trading and buying goods and services. In this Spanish-translated book, readers will learn about supply and demand, and learn the difference between wants and needs. Featuring images that support the informational text, students will build social studies content-area literacy and reading skills.

Even the smallest tide pools are actually entire ecosystems! The creatures that call a tide pool home are connected through food chains that represent the passing of energy from one living thing to another. Readers discover how these unique food chains all come together as they view a helpful tide pool food web. Fun fact boxes accompany informative text about life in a tide pool. Detailed photographs of tide pool ecosystems introduce readers to a variety of cool creatures.

Aunque acuñado por primera vez en Alemania tras la Primera Guerra Mundial, sólo en los últimos veinticinco años encarnado por rostros visibles que van desde Ronald Reagan y Margaret Thatcher a Bill Clinton y George W. Bush, o desde Tony Blair a, en España, José María Aznar el término " neoliberalismo " ha adquirido un uso más corriente, designando por lo general las políticas relacionadas con la desregulación de las economías nacionales, la liberalización del comercio o la creación de un mercado global único. Manfred B. Steger y Ravi K. Roy ofrecen en esta breve introducción...

An award-winning, educator-approved first book on birds. In this simple volume, educator and author Cathryn Sill uses clear, easy-to-understand language to teach children what birds are, what they do, and how they live. Noted wildlife illustrator John Sill provides beautifully detailed, realistic paintings to showcase the birds' diverse and natural worlds, and an afterword provides more details about each bird and inspires further learning.