The aim of this research is to determine the effect of the demonstration method on the active learning of PAK class VIII students at SMP N 3 Lintongnihuta, Humbang Hasundutan Regency for the 2023/2024 learning year. The research hypothesis is: "There is a significant positive influence of the use of the Demonstration Method on the Learning Activeness of PAK Siwa class VIII SMP N 3 Lintongnihuta Kab. Humbang Hasundutan 2023/2024 Academic Year." The population is all class VII students of SMP Negeri 3 Lintongnihuta for the 2023/2024 academic year, totaling 192 people. The research sample was determined using a nonprobability sampling technique, namely purposive sampling, namely class VIII-2 students, totaling 32 people, as the experimental class using the exposure method and class VIII-3, totaling 32 people, as the control class using conventional methods. This research method is a quantitative approach with a true experimental design method and a post-test only control group design. The instrument used in this research was a 30-item questionnaire. Research data is analyzed using the Separated Variance t test formula. From the calculation results, the value of tcount = 4.716 > ttable(α=5%) = 1.671. The tcount value is in the curve area of rejection of H0 and acceptance of Ha. Thus, it can be concluded that the accepted research hypothesis is that there is a positive and significant influence of the use of the Demonstration Method on the Learning Activeness of PAK Siwa class VIII SMP N 3 Lintongnihuta Kab. Humbang Hasundutan 2023/2024 Academic Year.