Can some please tell me about Rummy Roots

Can some please tell me about Rummy Roots? I know a lot of people here use it. How does it work?

 

ah, hmm..Anyone?

 

I have it. My boys love it. I did a review of it with pictures here.

 

ok. Thanks. But what are the big numbers on the cards for?

 

We use them for points. We are at the pre-rummy roots stage so I'm not sure if it will change later on, but if a child gets a match with a number 4 it is worth 4 points.