teaching(s) -- education(s) / spark(s) / fragment(s) / trail(s) 
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/ /
theme(s)
/ create
/ common(s)
/ art(s)
/ space(s)
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/ .
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idea(s)
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experiment(s)
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blind(s)
judge(s)
control(s)
brain(s)
craft(s)
closure(s)
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game(s)
rule(s)
engine(s)
math
domain(s)
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