Objects can be organized by attributes using Venn Diagrams.
This group of LEGO blocks are 6 colors, 2 heights (block and plate), 2 widths, and 3 lengths.
Spring Hill 3rd Grade September 7, 2010
http://www.marshall.edu/LEGO/SpringHill1011/07Sept2010SpH3Venn/07Sept2010SpH3Venn.html
http://www.marshall.edu/LEGO/VOB0405/26Jan05RateVennVOB/26Jan05VOBVENN.html
http://www.marshall.edu/LEGO/ContEd/Spring2005/29Jan05DuploLEGO/29Jan05LEGO.html
