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Ppl Download this! @Simon_Gregg @MarkChubb3 @TAnnalet @mavenofmath @jamiedunc3 @DavidKButlerUoA @helenjwc @geonz @MatthewOldridge @mathematize4all @heidifessenden + anyone else out there interested in spatial reasoning of Cuisenaire Rods (or other) #MTBOS