All puzzles are great for children but these Orchard Toys ones are particularly good. My son has 3 and he loves them. I would say the age guidelines on them are rather conservative. My 3 year old had no interest in jigsaws until he was given one of these (the big lifeboat); after doing it with him a few times he started doing it himself no problem. He can easily do the other 2 as well, very quickly, with no help and I don't think he's particularly gifted in the puzzle department! I think the 3-6 year old age guide should actully be 2-4 year old.