I have noticed that my second child just seems to go through all the development stages without me really teaching him anything.
When my first child was a baby/toddler I read loads of development articles as she grew up. If it said - She should now be doing xyz - i.e. putting hoops onto a pole, posting shapes in a shape-sorter, etc, then I started trying to teach her to do those things. I felt like she needed a lot of guidance and presumed she probably would get 'behind' if I didn't teach these things through play.
However, I just don't have time to show my youngest child how to do things. He is just over 1 years old. My older child is so demanding that he just tags along and often goes off to play by himself more often than my DD did.
Amazingly, I've found he is learning all of the development tasks somehow, at the right times. I turn around and there he is putting hoops on a pole and doing jigsaws. I know people will say it's because he watches my eldest doing those things, but I don't think that's always the case. He's also worked out how to use a spoon independently and a cup with no handles.
I've come to the conclusion that perhaps children do not need so much guidance and will naturally do things?? What do you think?