This research is aimed to (1) describe the process and product of development the good Quantum learning devices on linear simultaneous equations and (2) to know the effectiveness of the learning on linear simultaneous equations using Quantum model learning to reduce the students’ mathematical anxiety. The subjects of this research are grade eight students who experience mathematical anxiety problems in learning. In order to investigate the occurrence of students’ mathematical anxiety, the students are given mathematics anxiety test. This research applied 3-D model of lesson plans development process. The products of this research are lesson plan, worksheets, and achievement test. The results showed that (1) the developed quantum model learning devices had fulfilled the good quality criteria as they were valid, practical and effective, and (2) the learning process applying Quantum model learning was effective to overcome students’ mathematical anxiety problem in learning. The effectiveness was recognized by the ability of the teacher to organize the learning process which was categorized as minimally good; students’ activities in learning were effective; the students’ responses were positive; and the classical mastery learning was 100%. Moreover, the students’ mathematical anxiety problem in learning is reduced by 100% from overall appeared students’ mathematical anxiety.