The+Aces

Sign - Unique Internal flag that signifies a link between things. Does not change anything. Passive. Assigned a meaning by the individual in social context. Trigger.

Tool - Actively use a tool. Society and later Individual gives tool meaning. Use tool to change things. Tools can be linked to signs. Children used the cards as tools to help them remember. Out of context card has no or a different meaning.

Internalization - Social experiences that through repeated use become internal process with values and meaning unique to the individual External stimuli -> Internal Signs by way of continued experiences with increasing depth and breadth