Do you know the difference between there, their and they're?

They're over there in their car ;)

When I comfort a grammar teacher I always say "there, their, they're"

THEY'RE in THEIR car that's parked over THERE.

Sure do! ;)

Yes
There is a location
Their is claiming ownership
They,re is a contraction of they are. So adding it would be the shortened version of (They are).

Do you keep seeing people miss use it a lot? Is that why you are asking?

Carrots!

Yes. Although, if I'm tired and/or not paying attention to what I'm writing, it's not uncommon for me to mix there and their up. Same with your and you're.

Sure, do you need me to tell you?