Electronic dictionaries and thesauruses are very useful in the classroom for expanding language use and resolving spelling issues. What makes these online sources especially useful is the fact you can play links that "speak" the words. The dictionary link will, like any electronic dictionary, hazard a guess at your spelling efforts. This takes the stress out of trying to find a word in a paper dictionary you can't spell but using spelling patterns - an particular challenge for dyslexic students. The thesaurus link is my favorite as it comes with a colour code for determining the most important synonym or antonym word choices. Great for mobile tablet use in the classroom.
www.dictionary.com
www.theasurus.com
www.dictionary.com
www.theasurus.com