[magneticstain]

This is the framework my wife and I use with our boys as well. Let them explore things, use regular words, even if you think they don't understand them (they do).

Like you said, set the bar high, but keep in mind they're still kids and failure should never be punished. We found that doing that for some time results in them setting the bar high for themselves _all on their own now_. Their confidence is beaming, and they're never afraid to try new things, or try again after failing.