When I was doing my maths teaching PGCE we all had to do an assignment on maths in everyday life, or in subjects where non-mathematicians might not expect to find it. Mine was on the mathematics of Scottish dancing.
So, yeah, the maths of knitting and crochet, absolutely! 
Venezuela earthquakes, is £2million all the UK can afford to send for the relief effort?
Thanks all the same but I've decided I don't need to chuck something out of my memory bank in order to make room for maths concepts 