Other
Woodward English: Spelling Rules: Ing
Rules, exceptions, and examples of how to add -ing to verbs, dependent on the ending of the original word.
Other
Oxford Dictionaries: Verb Tenses: Adding Ed and Ing
Spelling rules and word lists for adding -ed and -ing endings to verbs.
Patsy Stevens
Garden of Praise: The 1 1 1 Spelling Rule
Sheet music for a song about when to double the final consonant before adding suffixes.
ClassFlow
Class Flow: Add Ed and Ing Endings to Verb
[Free Registration/Login Required] This flipchart introduces rules for correct spelling of verbs ending in -ed and -ing. There is a wonderful interactive activity and Activote assessment.