That young man will never forget this Shrapnel. Good on you as it could be the catalyst that starts a lifetime of the great outdoors. I’m currently doing the same thing with eight of them and number nine is on the way.
I've been taking my now 7 and 8 year old grandsons fishing for the last two years. We go to my local gun club's pond, which is full of sunfish and has a few bass as well. I usually take a container of 30 redworms and we generally only quit when we run out of worms. I'll start their younger sister next year, when she turns 6.
You have to experience the excitement of a young child catching a fish to truly appreciate it. Take one fishing (borrow one if you don't have one of your own). You'll be glad you did.