Research methods: designing a studyWatch
type of observation, with justification
choice of time sampling or event sampling, with justification
dealing withone relevant ethical issue
assessing reliability of the data through inter-observer reliability
Presumably this is part of a module or unit - have you read any relevant research or reading around designing a study?
Try not to make it too complicated as it seems the focus of the question is really on the design of the study. Equally, what you observe will likely depend on whether you want to do event sampling or time sampling. So maybe for event, you note down every time a boy and a girl talk, a girl and a girl talk and a boy and a boy talk. Or you could possibly looks at different types of play?