Teaching Children

Please give advice/tips on teaching children about Islam. I have a 3 year old son & 6 month old daughter and am starting to teach my son the Arabic Alphabet, it is just a start and some small duas to remember. My question how do you go about instilling or teaching good values/morals to a child so young. Me & hubby are trying ourselves to be more regular in namaz etc but need advice on how to instill the values.