I think it can be both, it depends on the children. We know who our children are and what they are thinking or wondering about and what they can take in. Sometimes it is appropriate to sit down for a conversation and sometimes the conversation will happen organically. It is important to use gender terms organically in conversation and point out things that you notice as things happen in real-time. Organic conversation is the best way to help teach children anything. It happens in the moment as they are interested and engaged.