An Ethnomathematics Perspective on the Use of a Sea Sámi Boatbuilder Tool

The fanasváhter is a special tool used by boatbuilders to determine how steeply the boatboards should be positioned. Sámi mathematics teacher educators, together with Sea Sámi boatbuilders and a pre-service mathematics teacher, present a descriptive case study of a Sea Sámi boatbuilder’s use of this tool. The aim is to reveal mathematical understanding that might be relevant for vocational school teaching. Firstly, we analyze a semi-structured interview with a skilled boatbuilder with respect to knowledge and values embedded in the use of the fanasváhter. Because the Sea Sámi boatbuilding tradition was almost extinct after the Nazis’ devastation in World War II, there is a need for some creativity in the boatbuilders’ regeneration of Sea Sámi boatbuilding. An analysis of the use of the fanasváhter with respect to creativity reveals how creativity is important in Sea Sámi boatbuilding. The analysis further reveals that Sea Sámi boatbuilders compare angles, but they do not refer to any angles measured in degrees. This contrasts with traditional school mathematics. Thus, the Sea Sámi boatbuilders’ mathematics is less abstract and more intuitive than traditional school mathematics.