Spelling Rule 15

Rule 15 refers to the phonograms 'si'. The phonograms 'si' is used to say 'sh' when the syllable before it ends in an 's' such as in ses sion or when the base word has an 's' where the base word changes when adding an ending such as in tense = tension.

• • • For example: concus sion, admis sion.

Watch the tutorial video below to see how the Spelling Tools, Spelling Rule 15 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.