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This study aims to produce a valid mathematics learning devices for class XI vocational school. The devices developed are learning plan and student’s worksheets based on quantum teaching. The development model used in this research is a Plomp model consisting of 3 phases, that is preliminary research, prototyping stage, and assessment stage. But the thing that is focused in this research is prototype development stage that is in stage of validity by expert. Aspects assessed at the validation stage are aspects of language, aspects of presentation /didactic, content aspects, and aspects of graffiti. The end result of this research is to produce a valid mathematics learning device based on quantum teaching. Keywords—Validation, Learning Devices, Quantum

Validity of Mathematics Learning Devices Based on Quantum Teaching to Improve The Problem Solving Ability of Students Class XI Vocational School