Utmaningar i geometriundervisning: en djupdykning i innehåll, elevers missuppfattningar och lärarinterventioner

Sammanfattning: This text discusses final results from empirical studies, scientific articles and literature from the period 1990-2023, concerning teachers’ knowledge, students’ misconceptions and various teaching methods related to geometric objects. The results highlight challenges for both teachers and students in understanding and defining geometric shapes and figures. The work elucidates students in grade 4-6 difficulties and knowledge in identifying geometric objects in varied positions, as well as their understanding of the properties of geometric shapes and figures. The teacher’s understanding is crucial för imparting accurate information to students in instruction. Therefore, effective teaching methods such as practical activities, everyday connection and Van Hiele’s instructional model are suitable to apply in practice. This instructional model has been effective in students education and is therefore a good example for a teaching method.  In summary, the results are based on the abilities of teachers and students and their abilities can be enhanced by adapting teaching methods related to geometric objects, and how misconceptions are something that should be taken seriously and be prevented.