First Name =Rasma Last Name =Garleja Title =Dr. habil. paed., Dr. oec. Prof. Institution =University of Latvia Street Address =Aspazijas blvd. 5 City =Riga State =Latvia Zip Code =LV 1050 Telephone =7034615 FAX =7034614 E-mail =evf@lanet.lv URL = Title of talk=Methodical Approaches to the Acquisition and Application of Mathematical Concepts