Using Concept Maps to Develop a Didactic Explanation of a Dress with Ambigous Colours

We report on an experience carried out to show the didactic use of concept maps as tools for the development of a progressive explanation of the colour perception of a dress with ambiguous colours. Concept maps are used to promote a conceptual change in our students trying to answer the question: Why some people perceive the dress as blue & black and others as white & gold? We must first answer another preliminary question: On what depends the colour we perceive in a given object? We have used observations of the original dress in our colour laboratory by more than 300 people. The concept maps developed are based on a test for the detection of preconceptions about colour that can be taken online. In addition, we use different concept maps in successive levels of elaboration about the different factors that determine the colour a certain object is perceived.