| Twenty-Four Item Sort
A two- to 24-item sort of anodized aluminum pieces. A difficult task
requiring attention to three relevant dimensions: color (silver and gold), shape
(circle, square, rectangle and hexagon) and thickness (thin, medium and thick).
Many variations are possible, including: sort by shape only, shape and color,
color only, color and thickness, and many more.
Includes 120 aluminum pieces and all bins. Also includes step-by-step
instructions and data sheets.
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