the tasks at sciencevsmagic are interesting and challenging
if you have IT availability in the classroom
a good powerpoint is Dan Walker's
I've slightly adjusted it but this is his (admirable) work
a powerpoint showing the constructions (click and leave but click between slides)
a loop to remind students of the loci they need to know (which could be played whilst they work: click and leave)
some questions
alternative construction for the angle bisector
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