Other
Oxford Dictionaries: Verb Tenses: Adding Ed and Ing
Spelling rules and word lists for adding -ed and -ing endings to verbs.
St. Charles Place Education Foundation
Reading Bear: Adding S Lesson
In this beginning reading module, the instructor models how to pronounce words that incorporate that end in letter "s" in them. Students are prompted to interact with the video segments at various times. Students can choose to sound out...
ClassFlow
Class Flow: Inflected Endings
[Free Registration/Login Required] This flipchart is designed for students to practice adding -s, -ed, and -ing to words.
BBC
Bbc: Skillswise: Suffixes [Pdf]
BBC Skillswise offers a worksheet on suffixes for teachers and students.