Rule 30 refers to the phonograms 'ar' two letter and 'a' 3rd sound. The rule explains which phonogram to use:
Use 'ar' two letter when followed by 1 consonant, is at the end of a word or is with his mates 'sh' and 'ch'.
For example: spark, star, march
Use 'a' 3rd sound when followed by 2 consonants.
For example: blast, draft, path
Watch the tutorial videos below to see how the Spelling Tools, Spelling Rule 30 and Reading Tools are used to spell challenging words.
Special Note:
Not all words will follow the spelling rule. These are called exceptions. If 90% or more words follow this rule then this is still a great tool to help become a proficient speller. Language experience will deal with the rest.