March 31, 2014 02:00 PM

Jeff Vespa/Getty

When Alfonso Ribeiro and his wife Angela had a baby boy last October, they got a crash course on the difference between sons and daughters.

Alfonso Lincoln is an awesome, fun little dude,” Ribeiro, who also has a 10-year-old daughter, Sienna, from a previous marriage, tells PEOPLE.

“But I’m really seeing the difference between ‘Daddy’s little girl’ and ‘Mama’s little boy.’ My son is really attached to his mama, and my daughter was really attached to me. I think that’s just the way things go.”

But there’s one thing that Ribeiro, 42, has going for him with his 5-month-old. “He knows my voice. If he hears my voice, even if it’s on TV, he starts looking around for me. He’s a lot of fun.”

Ribeiro tells PEOPLE that fatherhood inspired him to do more charity work. “My children are fortunate not to grow up underprivileged, but millions of other kids don’t know what that’s like,” he says. “I want to help as many of them as I can.”

On Saturday night, Ribeiro served as emcee for the Back to School Blast of A Gift for Teaching, an organization that distributes school supplies to underprivileged children.

“Any time I can lend my name to a charity that benefits children, I try to do it,” he says. “It’s a good way to be an example to my own kids.”

And there may be more Ribeiros on the horizon.

“I’m not done having kids,” he says. “My wife and I have been talking about having one more. That needs to happen in the very near future. I don’t want to be 75 years old when my kid graduates from college, so I’m going to have to get on this really soon!”

He adds, “My wife wants to have a girl next, so we will go for the girl next — but you never know. We will be happy with whatever happens.”

— Steve Helling

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