The image here is based on home-based observations of the children of others, how they learn, and this author s memory as a student in the classroom. This author as a child was an adult in waiting mentally alert and observant, if not informed, attending the future and a reason for being. Numbers may be just adjectives that become objects when discussed separately from the description of other objects. Another context for subtraction is provided by the coordinate line. Addition of a number n corresponds to n steps or a movement in a forward or positive direction.
Subtraction corresponds to step in another direction.
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