Deductive Thinking- these attribute games are good for deductive thinking.

http://matti.usu.edu/mathforum/attributeblocks.html
http://nlvm.usu.edu/en/nav/frames_asid_270_g_2_t_3.html
http://nlvm.usu.edu/en/nav/frames_asid_271_g_3_t_3.html

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Towers of Hanoi