Pleenok

A pleenok was a learning device used by Vulcans to train their infants in primary logic. It was a three dimensional puzzle in shape of a regular tetrahedron. 
In 2378, Tuvok gave a pleenok as a gift at the baby shower held for B'Elanna Torres within a holodeck simulation ran by Seven of Nine. ()
de:Pleenok
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Category:Tools
Category:Education
Category:Vulcan language