Lots of great links to resources in this blogpost on a presentation about this topic!
“If a child is to keep alive his inborn sense of wonder, he
needs the companionship of at least one adult who can share it, rediscovering
with him the joy, excitement and mystery of the world we live in.” Rachel
Carson
Sense of Wonder Book (aff link)
Sense of Wonder Book (Newer Version—aff link)
Learning Is In Bloom (aff link)