[it] hasn’t been by experience [that teaching by example is effective]. I’ve found that objectivism is difficult for others to understand, especially for mystics, when viewed from the outside.
I don’t understand why you say this AceNZ. Could it be that you are thinking of teaching some specific terms and inter-relationships, rather than the basics?
To concretize, take Rationality. Isn’t it best taught by example? If a child sees dad – even with his occasional emotional outburst or psychological idiosyncrasy – still manages to get a grip and act rationally most of the time, then the child gets a lesson. In fact, without example, the kid won’t learn it for all the words in the world (until he grows up and thinks things through for himself). One teaches a kid to be rational by being rational. Secondly, one teaches a kid to be rational, by helping them see the principle in some way: for instance, there could be some times when one is explaining one’s actions or evaluations to a kid. It won’t be: “from a rational point of view…”; however, that is the implicit message the kid will get if your reasons are truly rational. Thirdly, one has to expect and encourage the right behavior from the child: i.e. expect and encourage the child to act rationally, keeping in mind that he is a child who is still learning about this.
The same can be said of productiveness, pride, honesty, etc.
Indeed, most parents who are not too religious use some type of “common-sensical” explanations to their kids, telling them to be rational, productive, honest, etc., even though they may not use those terms. As an Objectivist, the advantage one has is that this is not contaminated by all sorts of other gunk.
As a parent, what you will teach your kid will revolve around Ethics, with a rational world-view (Metaphysics and Epistemology) mostly assumed.
If the two parents have significantly different views on a topic, that will definitely cause a problem. If I have to guess, the real differences would not come up in things like rationality (as applied to 95% of life), nor honesty, etc. The likely areas of disagreement would be: God, and altruism vs. selfishness. I think it’s nearly impossible for someone not privy to such a relationship to give any advice about that, except to say: the adults must come to some type of understanding about what the child will be taught. On the question if God, at a minimum, your kid should know that you do not believe in God.