Sometimes, we are so busy getting our ideas down that we make minor errors in spelling. For example, we may misspell a common word "because" or confuse "to" and "too". It is important to go back and edit your writing for common errors.
When younger, a good speller sounded out words. In middle school, sounding out words is important, but it is not always reliable. Sounding out words does not always work. It is important to pay attention to how words change when prefixes and suffixes are added. Sometimes, when suffixes are added to the end of a word, the pronunciation of the word changes, but the spelling of the root or base word does not.
Use the online dictionary learn how to spell a word:
Spelling Booklet
Below is booklet of strategies for studying words. The most important idea to remember is to look for base words and recognize how they change or do not change when affixes (prefixes and suffixes) are added. Good spellers look for letter patterns.