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Title Montessori Maths Aids Maths Bars [Montessori red and blue rods]
Published [Mountain View, Calif. :] : [distributed by Nienhuis Montessori], [between 1970-1979?]

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Description Large red and blue wooden rods
Summary These rods are the child's first introduction to numbers in the Montessori classroom. The rods represent the numbers one through ten, teaching the child to count by alternating the red and blue sections of each rod as they they are arranged in a stair-like formation
Notes Title supplied by cataloguer
Subject Counting -- Study and teachng (Primary)
Genre/Form Puzzles and games.
Author Nienhuis Montessori U.S.A., Inc.