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The Five Yellow Prisms are used in calculating the volume of a rectangular prism
The second is used to coordinate finger movements
BASE 6: 1 cube
The prisms are stored in a hinged wooden box with lid
To give the child concrete experience in addition
Montessori Algebraic Peg Board classroom furniture The Five Yellow Prisms are300 red, blue and green small pegs and 6 color bowls, 900 wood holes in the big board
US$ 140.00
US$ 32.99
US$ 199.99
US$ 43.99
