Instrument and Procedures NGSS-oriented learning tools can be used to improve the skill of developing and using models for students by the experimental method, with one experiment group and one control group. The experimental group used NGSS-oriented learning tools while the control group used the teacher’s learning tools. The research location was SMP 1 Wates, Kulon Progo. The techniques of data collection used in this study were in form of observations of the developing and using models skill by an observer entered in an observation sheet during the science learning process. Data analysis included a percentage of students’ developing and using models skill produced by descriptive statistics and comparing it to the skill of students in two groups, to find the best score between the experiment and control groups.