The Next Generation Science Standard (NGSS) is an educational standard used in the United States. It is also used in Indonesia because it has characteristics similar to Curriculum 2013, which is used today. This standard is adapted in science learning because it is expected to easily measure students' processing skills in a specific theme. Science learning by a process must be measured by students' specific skills and comprehension. This study aims to reveal the feasibility of NGSS-oriented science learning tools. The tools are lesson plans, science worksheets, and assessments of the developing and using model skills through observation. To improve the skill of developing and using models using NGSS-oriented learning tools, we made quasi-experiment with one experiment and one control group. The developing and using models skill data were obtained by an observer through an observation sheet during the science learning process. The obtained data is further analysed to obtain a score which showed that the developing and using models skill of the experimental class, i.e., 3.69 is higher than that that of the control class, i.e., 1.58. The results include the validation of NGSS-oriented learning tools scored by experts, science teachers, and students in preliminary field testing.