Español Abecedario con Animales

Marzo de 2009: un niño estornuda en un pueblo de México. Dos meses después, miles de personas se infectan en todos los rincones del planeta y comienza el recuento de fallecidos. Acababa de estallar la pandemia de la gripe A (H1N1), de consecuencias aún imprevisibles. En 1918, la gripe mató a millones de personas. Estamos ahora mejor preparados que hace un siglo? Ha sido exagerada la respuesta de las autoridades o se ha hecho frente al problema con la severidad necesaria? Es segura la vacuna contra la gripe? Qué consecuencias puede acarrear no vacunarse? Más allá de la gripe, pueden...

Many people depend on blue crabs from the Chesapeake Bay for their jobs. But overfishing and changes in the blue crabs' habitats have reduced their numbers. Learn how scientists have stepped in to study these blue beauties so that they can keep a healthy crab population. Created in collaboration with the Smithsonian Institution, this Smithsonian Informational Text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step of the engineering design process and is...

En este libro descubrirán que sí es posible desarrollar su potencial y alcanzar la excelencia sin una presión excesiva.

Electricity affects every part of our lives, but we don't always think about it. We turn the lights on every day without wondering how the electricity gets there. Electricians are the reason we don't always have to worry that the lights are going to stop working and the people we can help if they do. Electricians don't just have to use their intelligence, they also have to be good with their hands. They have to be able to work with many different people and know what to do in case of an electrical emergency. Electricians keep our world running. Instructive, colorful photographs and diagrams...