Early Childhood Education Major
It seems like your children have a great academic vocabulary. Perhaps you can add talking about the natural world and what they might find outside around the center--bringing the outside into the classroom. As others have mentioned, I would do this in context and as an exploration of materials, concepts, and the world around them. Similarly, an exploration of the emotional world will enrich them and help their development. I would also find out what they're curious about and head in that direction. I'm not implying that you don't include these areas of 'study' already, as you probably do, but encouraging you to think of them as on par with the academic words you mention. They're not separate. I think it's more important for children to have emotional literacy than academic literacy at this young age as this fosters the self-regulation skills to enable happiness and academic learning. I can stretch emotional literacy to include the natural world and the ability to choose their own areas of interest to study, as both of these foster self-regulation skills.