Artesanía: Vidrio soplado (Craft It: Hand-Blown Glass)

"It's easy for superpowered crimefighters to turn invisible and sneak up on bad guys. What about real crimefighters? Find out how scientists are using technology to make things disappear before our eyes. Now in Spanish!"--

Describes the frogs, toads, and salamanders of Mexico's Yucatan Peninsula, looking particularly at the wide variety of adaptations found in the few species that dwell there.

In the United States, the ability to take informed action is becoming increasingly necessary, and difficult. This book delves into the importance of being informed and explains how not all sources of information are equal. Readers are introduced to the scientific method as a way of testing information for credibility. Students will also learn how to turn credible information into action by forming groups, protesting, contacting elected representatives, and possibly even running for office themselves someday.

Una fantástica serie de biografías ilustradas para conocer a los personajes más destacados de la historia de una forma didáctica y divertida. Leonardo Da Vinci fue uno de los pintores más importantes de la historia, además de un talentoso músico, y un estupendo científico e inventor. Construyó máquinas voladoras, submarinos, ¡e incluso helicópteros! Sin embargo, le costaba mucho terminar las cosas que empezaba. Por eso, hoy en día solamente lo conocemos por sus obras más famosas, pero hay mucho más... Descúbrelo todo en este libro.