Help with child development interrelations ?

I have an assessment due on Monday, we were to write a case study about a child in nursery and include their aspects of development and then we are supposed to 'describe 2 aspects and explain how they interrelate in approx 250 words' and I'm struggling so much on how to write it and how to make it to that many words!! I've not even got half at the moment. Any help would be amazing.