Faculty of Mathematics and Sciences Yogyakarta State University
Abstract
This research aims to produce a valid and reliable mathematics assessment instrument in the form of HOTS test items, and describe the quality of HOTS test items to measure the high order thinking skill of grade VIII SMP students. This study was a research and development study adapting Borg & Gall’s development model, including the following steps: research and information collection, planning, the early product development, limited try out, revising the early product, field try out, and revising the final product. The research’s result shows that the HOTS assessment instrument in the form of HOTS test items consists of 24 multiple – choice test items and 19 essay test items, based on the judgement of the materials, construction, and language is valid and appropriate to be used. The reliability coefficients of the instrument are 0.713 for the multiple choice items, and 0.920 for essays. The multiple choice items has the average of item difficulty 0.406 (average), the average of item discrimination 0.330 (good), and the distractors function well. The essay test items has the average of item difficulty 0.373 (average) and the average of item discrimination 0.508 (good).
Keywords: development, assessment instrument, Higher Order Thinking Skills (HOTS), mathematics in the junior high schoo
