Effectiveness of A Proposed Unit in Science in Light of the Next Generation Scientific Education Standards (NGSS) in Developing Scientific Concepts for Visually Impaired Students in the Preparatory Stage

The current research aimed to know the effectiveness of a proposed unit in science in light of the Next Generation Scientific Education Standards (NGSS) in developing scientific concepts for Visually Impaired Students in the preparatory stage. Remember, understanding and application, the experimental method with a quasi-experimental design was used for one group with a tribal and dimensional measurement, and the research tool was applied before and after and the proposed unit was applied, and the research reached a number of results, including: the scarcity of research in the field of science curricula for the visually impaired in general, and in light of the standards of scientific education For the next generation in particular, and the science curricula for the visually impaired have not received any development to suit the needs of the visually impaired and coincide with modern trends in science curricula, in addition to the effectiveness of the proposed unit in science in light of the Next Generation Scientific Education Standards (NGSS) in developing scientific concepts for students The visually impaired in the preparatory stage, where the study showed that the Z value is statistically significant at the level of 0.05, which indicates There is a difference between the mean scores of the students of the research group in the pre and post applications to test scientific concepts in favor of the post application.