Quote Originally Posted by HeadlessMermaid View Post
I still don't understand why "than him" is wrong. Or if it IS wrong, for that matter.
What are you comparing with "than"? That will tell you the answer.

"I'm better at math than him." Here, you compare your skill at math and him. "I'm better at math than I am better than him." That's not what you want to say, is it?

If you're comparing your math skill and his math skill, then you should say it like this: "I'm better at math than he is."