Show a three-year-old a rainbow and his eyes pop open, he laughs and murmurs something that sounds semi close to English; that's wonder. Show a third grader how pleasing God connects to honoring her parents and she will most likely look at you funny and continue eating her pizza; that's discovery. As a teacher, church leader, or parent you want a curriculum that will help you connect the love and worship of God to good decision-making for your elementary school students. You want something that will help them see the value of respecting authority and treating their friends like they are human, not SpongeBob®. You need it to be simple. You would love it to be flexible. You want it to suit your individual needs. Time to go to the basics. What if by the time your child reaches 6th grade they will know these five core truths:

God is the Holy Creator.
I can trust God's Word (Bible).
I can trust Jesus with everything.
I should try to live like Jesus lived (make wise choices by His Word).
The world/culture does not usually agree with God's Word.

Most kids form their entire idea of who God is, and choose whether nor not they'll have a relationship with Him before leaving 5th grade!