HEATKEYS

El sistema solar, astronomía, planetas, Mercurio, Venus, La Tierra, Marte, Júpiter, Saturno, Urano, Neptuno y Plutón.

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Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

Lessonpaths allows you to create, share and explore learning playlists made by people like you

Facebook is a social utility that connects people with friends and others who work, study and live around them. People use Facebook to keep up with friends, upload an unlimited number of photos, post links and videos, and learn more about the people ...

YouTube is a place to discover, watch, upload and share videos.

HowStuffWorks Electronics gives you explanations, reviews, opinions, and prices for popular electronics, iPods, home theaters, and other gadgets.

Scratch: a programming language for everyone. Create interactive stories, games, music and art - and share them online.

La pasta de papel es la combinación de fibras de celulosa y arcilla. Es mucho más ligera una vez quemada, y es posible crear piezas grandes sin que presenten grietas, a la vez que aumenta su resistencia, en especial en estado crudo. Otra de sus car...