We just started using Foundations Bible Curriculum this year with my 5yo, 4yo, and 3yo, and we're liking it. It's a 3-year chronoloical Bible curriculum and includes activities and such for different ages. So you can go through the program several times and have it be a little different each time. Once you finish one 3-year cycle, you just go through it again. I can definitely see how my kiddos will get much more out of it our second time through the cycle, but at the same time, they are learning a lot this time around too!
HTH