| AC-110 | 
			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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