The teaching of religion to a child has to start with - God is One (not 2, 3 or more, not half), by giving logical examples. The subsequent lesson is creation. That God created everything perfect or 'just right'. The next lesson is thankfulness. To thank God for creating everything perfect. These 2-3 lessons are deep and philosophical enough till they are matured enough for deeper thoughts and questions. And then you face questions like Who created the dinosaurs? Who created sharks? Basically who created 'what they think is an important creation?' They dont really have questions like 'why' or 'how' till they are more than 10yo I feel.

This is our teaching philosophy.

Other than that, parents are a manifestation of God to children (till they remain children). Because they create, nurture and do everything for them if you think from a manifestation pov. And children remain dependent on parents for most things. Like we are dependent on God for nurturing etc. The aim is to make children independent or to make them parent like. Similarly, our aim is to become God like. Or acquire the divine attributes. But eventually this will be grasped in the life course or with experience.

This question then leads to the point - that we are all constantly knowing or learning about God by learning about ourselves, and that is a never ending experience to know God or know ourselves.