Abstract:
This is a short paragraph summarising your report in 4 sentences (think of it as the sort of summary that might be given to you when you ask chatGPT 'summarise this IA in 4 sentences, at a reading level of an IB diploma student')
what were you trying to find out - your research question in bold type
how did you do this (a single sentence describing the method)
what trend did you find (linear, proportional etc and between which variables)
demonstrate with data if appropriate (e.g. The graph of .... against .. give a directly proportional relationship demonstrated by a gradient of m = ...±... and the intercept of c = ....±....)
This is the last section you write as it is the 'bare bones' summary of the entire report.