Dona Herweck Rice 
Agricultura organica [PDF ebook] 

Where does our food come from? The history of farming provides much "food for thought." In the past, farmers used natural farming methods, but modern inventions like pesticides and GMOs have changed farming–and the food we eat. Today, a natural food revolution is taking place. Learn how organic farming is good for the Earth, good for the plants–and good for all the living things that eat them! Created in collaboration with the Smithsonian Institution, this Spanish-translated Smithsonian Informational Text builds reading skills while engaging students‘ curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge that is perfect for use in a makerspace and teaches students every step of the engineering design process. Make STEAM career connections with career advice from actual Smithsonian employees working in STEAM fields. Discover engineering innovations that solve real-world problems with content that touches on all aspects of STEAM: Science, Technology, Engineering, the Arts, and Math!