The development of scientific literacy test instrument for high school material elasticity of solids.

The availability of scientific literacy test instruments is still minimal and generally applicable, so a scientific literacy test instrument is needed with the type of test that applies to a small scope. The general objective of the research is to produce a scientific literacy test instrument, while the specific objective is to describe the test instrument, validity, reliability, discriminatory power and level of difficulty of the items. This study is a Research and Development (R & D) research with a procedural model from Borg and Gall, which was then analyzed based on the validity, reliability, discriminating power and level of difficulty of the items using the Aiken validity, classical theory test and Rasch model. Based on the Aiken validity analysis and the classical theory test results, 22 of the 40 items were declared valid and reliable with the different power of the questions accepted and having a difficulty level of 95.45% easy and 4.45% moderate. The final results of the research on 196 students using the Rasch model analysis, namely (1) On the validity of the test instrument there are 18 items declared valid; (2) Has a high degree of reliability; (3) Has four items with poor discriminating power; and (4) It has a difficulty level of 9.90% very difficult items, 40.90% difficult items, 45.45% easy items and 4.45% very easy items. This research concludes that the scientific literacy test instrument that is prepared has a fairly good quality and can be used. [ABSTRACT FROM AUTHOR]