K12 Reader
5th Grade Master Spelling List
Here's a spelling program that includes 36 lists of 21 words and 20 suggestions for weekly activities. Each list includes common and proper nouns, sight words, academic vocabulary, and words built on a specific Greek roots.
Online Writing Lab at Purdue University
Purdue University Owl: Exercise: Ible and Able Spelling Exercise 1
This Purdue University OWL (Online Writing Lab) provides practice with adding -ible or -able as suffixes to words based on the context of sentences.
Online Writing Lab at Purdue University
Purdue University Owl: Suffixes: Ible vs. Able
A constant dilemma: ible or able? Find out when to use which.
English Club
English Club: Spelling Rules: Ible/ Able
A list of commonly used words with the -ible suffix followed by rules for using -ible and -able suffixes. It also provides a link for an -ible/-able quiz and links to other spelling rules.
Other
Oxford Dictionaries: Do You Know Your Ibles From Your Ables?
Rules and examples for words ending in the suffixes -able and -ible.
Other
Grammarist: Able and Ible
Rules and examples for words ending in the suffixes -able and -ible.