My mum recently passed on to me my old Cuisenaire rods. They were much loved and used and are missing many pieces - lost, no doubt after making fences for paddocks or walls for houses or some such activity not related to mathematics - which I can't ever remember doing with them. Rods, like blocks are all useful, but along with this universal usefulness comes an attrition rate that is to be expected with children and building activities. Still, enough of the rods remain for me to be able to…
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