In the monograph The Math Teacher (following the Third International Scientific Colloquium Mathematics and Children in 2011), the term "teacher" designates a person who teaches mathematics, and the context of each article reveals whether this implies the teacher at a pre-school institution, a school or a university instructor. In Croatia, much like in Europe and around the world, special attention in the field of education is given to mathematical literacy of children (PISA programme) as well as to mathematics teacher training (quality insurance in higher education). This monograph contains five chapters: (1) New Approaches to Education Of Math Teachers; (2) Skills, Knowledge and Abilities of Students; (3) How to Achieve Desirable Learning Outcomes Within Teacher Studies; (4) Teacher and Students in Teaching Practice; and (5) What Difference Can a Math Teacher Make. The 33 papers comprising the five chapters of this monograph are: (1) Why Is There a Shortage of Mathematics Teachers? The High-School Students' Views on the Mathematics Teacher Profession (Rukavina, S.; Kovcevic, D.; and Bakic, M.); (2) Mathematics in Programs of Preschool Teachers' Professional Education (Romstein, K. and Ajman, S); (3) Contemporary Approaches in Teaching Mathematics at Teacher Education Faculties in Serbia (Vulovic, N.; Mihajlovic-Kononov, A.; and Egeric, M.) [abstract only]; (4) Educating Future Mathematics Teachers: Repeating Mathematics from Primary and Secondary School (Jukic, Lj and Matic, I.); (5) Concept Maps in Maths Teachers' Education (Mrkonjic, I.; Topalovec, V.; and Marinovic, M.) [abstract only]; (6) The Number Line as an Arithmetic Machine (Stanic, M.); (7) Analysis of Inductive Reasoning in Mathematical Problem Solving among Primary Teacher Students (Manfreda Kolar, V. and Hodnik Cadez, T.); (8) The Study of the Geometrical Concepts of Teacher Training College (Szilagyne Szinger, I.); (9) The Mathematics-Knowledge of the Teacher Training' Students in the First Year (Petz Tiborne (Toth, Sz.)); (10) Competence of Teacher Education Students for Giving Lessons in Advanced Mathematics (Deri, I.; Gregorovic, Z.; and Moslavac, D.); (11) Spatial Reasoning of Students of Mathematics Education at the Department of Mathematics, Faculty of Science, University of Zagreb--Mental Cutting Ability (Cizmesija, A. and Milin-Sipus, Z.); (12) When Technology Influences Learning? (Divjak, B.; Erjavec, Z.; Jakus, M.; and Zugec, P.); (13) Between Axioms and Reality (Cotic, M. and Felda, D.); (14) Nice Tilings, Nice Mathematics!?! (Molnar, E.); (15) Use of Technology for Enhancement of Teaching Mathematics: Perspective, Problems, and Criteria and Selection Method (Mundar, D. and Horvat, D.); (16) What is the Future of The Integration of ICT in Teaching Mathematics (Dobi Barisic, K.; Deri, I.; and Jukic, Lj); (17) The Effect of Students' Learning Style on the Selection of Elective Modules (Durdevic, I.; Zekic-Susac, M.; and Pavlekovic, M.); (18) Self-Efficacy of the First Year ICT Students (Brumec, M.; Divjak, B.; and Zugec, P.); (19) Exploratory Learning of Mathematics in Primary School: Advantages and Examples (poster) (Brueckler, F. M.); (20) Mathematical Experiments (Brueckler, F. M.); (21) Natural Learning of Mathematical Terms in Preschool (Petrovic-Soco, B.; Hajdin, Lj.; and Balic, T.) [abstract only]; (22) Supporting Development Of Mathematical Skills Of Pre-School Children through Projects (Vekic-Kljajic, V.); (23) Real Objects and Problem Solving in Mathematics Education (Munkacsy, K.); (24) Adaptation of Teaching Units in Mathematics for Pupils with Disabilities in the Regular School System (Pavlekovic, I. and Duvnjak, Krampac-Grljusic, A.) [abstract only]; (25) Play--A Way Towards Mathematical Competence (Basta, S. and Mesic, D.); (26) Didactic Games in Mathematics Teaching (Juricic Devcic, M.); (27) Discovery Learning in Mathematics by Using Dynamic Geometry Software GeoGebra--Action Research (Bjelanovic Dijanic, Z.) [abstract only]; (28) Low Success in Mathematics Teaching: Causes and Consequences (Resic, S. and Suljicic, A.); (29) Teachers' Attitude toward Mathematics (Misurac Zorica, I. and Domazet, J.) [abstract only]; (30) Teacher and Textbook in Geometry Education (Glasnovic-Gracin, D.); (31) Mathematics as a Factor in the Development of a Well-Educated Individual (Agic, H. and Resic, S.); (32) Mathematics Education in Croatian Elementary Schools--The Teachers' Perspective (Baranovic, B. and Stibric, M.) [abstract only]; and (33) We Would Like to Thank our Distinguished Mathematicians (Poster) (Katalenic, A. and Tomic, D.) [abstract only]. (Individual papers contain references, tables, figures, pictures, and footnotes.) [Abstract modified to meet ERIC guidelines. All papers are provided in both English and Croatian. This document was produced by Faculty of Teacher Education and Department of Mathematics, Josip Juraj Strossmayer University of Osijek.]