You don't mention the year group - if it's history which is your prime objective driver then how about comparing the descriptions - I think Tacitus may be one of the first to describe her but could be wrong. You could explore issues about the writer of the descriptions and when they were written - for what purpose and by whom - was it someone who was trying to glorify her e.g. perhaps a romanticised version by a victorian historian or someone who wanted to show her as brave and wild but ultimately defeatable - as with original Roman accounts - she would not be discounted as a weak woman since her armies had sacked Colchester and London but she was beaten by Roman cunning and the more 'organised' Roman army in original accounts. - You might find more on this is you search for Nuffield Primary History as I'm sure I once came across some source material there. Depending on age this could be in more or less detail and link to historical perspective and that historical records are highly dependent on their writers. You could link to PSHE and points of view or link to different accounts of the news that might be given by different parties???