Essay questions on dynamic fluid physics material to measure intellection thinking ability of grade XI high school students

This research aims to develop multiple-choice physics items in measuring the ability of talent intellection of class XI high school students on dynamic fluid material. This research uses the Research and Development (RD (2) writing test questions; (3) examine test questions; (4) conducting test trials; (5) analyzing tests; (6) correcting test; (7) assembling the test; (8) carrying out the test; and (9) interpreting test results. The items to be generated are in the form of an essay that can be accessed via smartphones or laptops connected to the internet network. The feasibility test of an essay physics test item on dynamic fluid material to measure the ability of high school student intellection thinking ability through a validity test questionnaire to expert judges by providing a Likert scale and analyzing using the Aiken formula. Validation results from 17 items test questions show validity ≥ 0.87, then the items valid and can be tested to students.