A concept map is a node-link diagram showing the semantic relationships among concepts, where the process of constructing concept maps is known as “concept mapping.” A concept map consists of nodes (concepts), arrows as directional links, and usually captions for each link that describe the relationship between nodes [see Fig. 1]. Concepts can be described as perceived regularities or patterns of events or objects, or records of events or objects. Two concepts connected with a labeled arrow can be described as a proposition. Concept maps are versatile graphic organizers that can represent many different forms of relationships between concepts. The relationship between concepts can be articulated in the link captions, for example “leads to” (causal), “consists of” (part-whole), “follows” (temporal), “is inside of” (spatial), “increases” (quantified), or “is different than” (comparison)....