Texas Education Agency
Texas Gateway: Spelling Rules and Irregular Words
This site discusses exceptions to spelling rule, words that don't fit the typical letter-sound correspondence rules. It provides links to lists of frequently used words such as the Dolch list and 1,000 Most Frequent Words in Middle and...
Other
Woodland Hills School District: Spelling Rule Sheets [Pdf]
A PDF of 24 different phonics and spelling pattern worksheets.
Fact Monster
Fact Monster: Spelling Plural Nouns
A chart that shows general rules for regular and irregular plural formations for nouns, plus a list of some exceptions.