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Introductory programming courses are a challenge for any teacher and a barrier for students. Among other factors, novice programmers often have misconceptions, leading them to build incorrect mental models. A concept inventory coupling tangible interfaces and augmented reality (TARCI) has been developed according to a design-oriented methodology, in close collaboration with the future users of the system (students, teachers). With TARCI, teachers should quickly become aware of misconceptions in their students and thus be able to correct them. Preliminary tests were carried out during development, in particular to improve TARCI first with eight experts and then with nine students. These tests show promising results.