Surely the only way to introduce a child to evolution is to warn that it is not how God says He did things. God Created. That is very hard to do, even for Him. But that is what He did and Adam came about instantly not over eons of time. The Bible clearly warns us not to go along with evolution as it is an error to do so. Therefore in answer to the question “When should you introduce your child to evolution” the answer must be AFTER YOU HAVE INTRODUCED YOUR CHILD TO GOD.