This study discusses the use of Bloom's Taxonomy in Mathematics learning. This study is intended to answer the problem. How to Use Bloom's Taxonomy in planning, implementing, and evaluating mathematics learning at Nurul Iman Ashopi Elementary School. This study aims to determine the use of Bloom's Taxonomy in planning, implementing, and evaluating mathematics learning at Nurul Iman Ashopi Elementary School. This study uses a qualitative research approach. The technique of collecting data is by interviewing. The results showed that the teacher had applied 3 aspects of Bloom's Taxonomy, namely cognitive, affective, and psychomotor aspects. In the implementation stage, the teacher applies cognitive aspects at the level of knowledge, understanding, application, and evaluation. The affective aspect is seen at the level of acceptance, participation, the formation of life patterns, the psychomotor aspect is seen at the level of complex movements, and ordinary movements. In the process of evaluating mathematics learning, the teacher also applies Bloom's Taxonomy on cognitive aspects at the level of knowledge. Affective aspects at the level of acceptance, participation, and the formation of patterns of life, psychomotor aspects of students at the level of complex movements.