John BlackwoodJohn Blackwood, who died in 2015, worked in mechanical engineering design for nearly 30 years and was inspired by Lawrence Edwards' work with plant geometry. He became a teacher at the Glenaeon Rudolf Steiner School in Sydney, Australia. There he desgned a maths course for Classes 11 and 12 which was accepted by the school board of New South Wales. He lived in Sydney and was also the author of Geometry in Nature (Floris Books). Read More Read Less