Berta, Tünde2013-10-012013-10-012005http://hdl.handle.net/2003/3064110.17877/DE290R-5615In Budapest I have a special course for third year teacher students, where I prepare high school tasks for them, with which I would like to make similar problem situation as their students will have in classroom. During these lessons we use and make concrete models, computer based worksheets and computer animations as help to solve these tasks. I will show you one of this tasks, how to make paper model easily by folding and how computer animation will help to understand and to solve this problem. In this short paper I would like to write some words about my teaching experiences with my students and with students in Jena too.enGesellschaft für Didaktik der Mathematik510conference contribution