Re: good with and good about
Both of your examples are fine. Others:
She's good with children. He is good with horses. I am good with numbers (good at maths).
What's good about Spain is the food. What's good about England is the television.
You can also use "good about" like this:
"I broke a chair in the hotel, but the owner was very good about it." (Meaning that the owner didn't get angry or upset.)
"I've got an exam tomorrow, but I feel pretty good about it." (Meaning that I'm not worried.)
Re: good with and good about
Thanks.
Is it possible to say "I am good with maths". If not, why can you say that you are good with numbers but not with maths?
Re: good with and good about
It seems that "good with" and "good at" may be interchangeable in some cases.
I've seen people writing "I'm good with grammar" and "I'm good at grammar" - and the same with maths, languages, geography etc. I really don't know what the rule is.
But here's a rule (I think): If the word ends with "-ing", you have to use "at".
I'm good at running, he's good at drawing, she's good at swimming.