New idea
Same items, different rules
A small RED square could go in: the "red" group, the "square" group, the "small" group, or even the "red and small" group. The same item fits MANY groups depending on the rule.
The same things can be grouped by colour, shape, OR size.
New idea
A small RED square could go in: the "red" group, the "square" group, the "small" group, or even the "red and small" group. The same item fits MANY groups depending on the rule.