HEATKEYS

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...

Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.

Astronomy labs and teaching resources developed at the University of Nebraska-Lincoln. Includes simulations, flash animations, graphics, in-class questions and ranking tasks.

A different astronomy and space science related image is featured each day, along with a brief explanation.

Space.com provides information on everything Space - satellites, stars, astronomy, the Sun, planets, NASA and more.

Data Decoded, Value Unlocked.

Hindawi is a rapidly growing academic publisher with more than 200 Open Access journals covering a wide range of academic disciplines.

Vocabulary.com helps you learn new words, play games that improve your vocabulary, and explore language.

Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

The largest and most trusted free online thesaurus. Quickly find accurate and up-to-date synonyms, antonyms, and related words at Thesaurus.com. Synonym dictionary, antonym dictionary, words synonyms.