A flash card or other type display member is disclosed in which one or more display surfaces are provided for displaying a first indicia, preferably educational indicia. A flap is provided on display surface for optionally revealing a second indicia associated with the first indicia.

 
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< Method and system for approximating value functions for cooperative games

> Flipbook for making words according to orthographic patterns

> Simulated disposable foreskin for training surgical procedure of infant circumcision

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