Extra English Practice
Their, there, they're and other common homophones
Vocabulary lesson comparing three sets of common homophones: there/their/they're, it's/its, and your/you're. Fill in the blank activities and a BINGO game for practice.
Khan Academy
Khan Academy: There, Their, and They're
This is one of the most frequently-confused trios in the English language. Follow along, and learn to suss out the differences between these three words.