Patterns and Design
Design Problem: Why Geometry?
Most of the arguments I see for teaching kids geometry are something like this one from the Improving Measurement and Geometry in Elementary Schools (IMAGES) Team (IMAGES, 2003):
In other words, kids aren't performing up to some standard, or American kids are performing at a lower level than kids in other countries or other parts of the US. This argument isn't terribly compelling from a Montessori point of view, since it is based on imposed standards rather than the needs of the child.
A somewhat better argument is presented by Kynigos (1992, p. 97):
Montessori thought enough of geometry to devote one of seven parts to it in The Advanced Montessori Method (Montessori, 1965, Part IV), a book on her method applied to children aged seven to eleven. The only other section of the book that deals with mathematics is Part III which deals with arithmetic (Ibid, Part III). I don't know her reasons for giving such a prominent position to geometry. I hope to find some argument of hers as I continue my literature review.