Inquiry-based mathematics education is an approach to learning and teaching in which students behave like mathematicians in order to construct knowledge. This approach encourages students to ask questions, explore mathematical concepts and collaborate to find the answers. Inquiry-based mathematics teaching deepens the students' understanding of mathematics and improves their critical thinking, problem-solving and communication skills. The approach has a positive impact on students' attitudes and motivation towards mathematics, making it more interesting and relevant to their lives. The teacher has the role of facilitator, guiding the learning process and providing the environment for inquiry. Inquiry-based mathematics education requires careful planning to balance teacher guidance with independent student inquiry. With appropriate training and support, teachers can successfully implement this approach and create a dynamic and engaging learning environment that provides primary school students with the mathematical skills they need for lifelong learning. This thesis explores the advantages, disadvantages and implementation strategies of an inquiry-based learning approach in Mathematics. The aim of the thesis is to give an overview of the previous research findings on inquiry-based learning and to give examples of how this approach can be implemented in the primary mathematics classroom.