Other
English Language Centres: When to Use Able and Ible
Read definitions and examples of the suffixes "able" and "ible" to learn the proper usage of each. Then complete a practice activity by choosing the correct word and suffix to complete each of the ten sentences.
Other
Grammarist: Able and Ible
Rules and examples for words ending in the suffixes -able and -ible.
English Club
English Club: Spelling Rules
This EnglishClub tutorial provides rules for spelling words. Spellings related to using -ei-, -ie-, -ible, -able, -er, -est, -ed, -ing, -ly, and -s are featured. These are followed by a link to a large set of spelling quizzes.