Directions: Draw a line from each Circle of Evaluation on the left to the corresponding code on the right.
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(* (- 1 1) (+ 1 1))(* 1 (- 1 1))
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(- (- 1 1) 1)(* (+ 1 1) (- (+ 1 1) 1))
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(* (- 1 1) 1)(* (- 1 1) (+ 1 1))
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(* 1 (- 1 1))(- (- 1 1) 1)
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(- (+ 1 1) 1)(* (- 1 1) 1)
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(* (+ 1 1) (- (+ 1 1) 1))(- (+ 1 1) 1)
These materials were developed partly through support of the National Science Foundation,
(awards 1042210, 1535276, 1648684, and 1738598). 
BS:Games by Jen Poole, Emmanuel Schanzer, Ed Campos Jr, and Dorai Sitaram
is licensed under a
Creative Commons 4.0 Unported License.
Based on a work at www.BootstrapWorld.org.
Permissions beyond the scope of this license may be available by contacting
schanzer@BootstrapWorld.org.