استخدام نمـوذج راش اللوغاريتمي أحادي البارامتـرفيتدريج اختبار لمستويات التفكير الهندسي مبني وفق نموذج فان هيل

Abstract

The present study aims Using Rasch model in calibrating a Criterion Referenced Test (CRT) to measure levels of geometric thinking based on Van Hiele Theory. The test of geometric thinking levels is a multiple choice test consisted of (28) items. The test was administered on an exploratory sample and basic one, both of them composed of (681 males and females) students of secondary school.

The results of the calibrated test, after excluding (6) item and (11) person, showed that the test was reliable. The reliability coefficient of the items is (0.99) and the reliability coefficient of persons is (0.65), and also the items of test covered the difficulty range well, between (-1.61 - 1.46) Logits, and values ​​of the ability of persons between (3.44 - 4.63) Logits, and all the 22 items lies within an acceptable range of MNSQ value (0.7-1.3) and ZSTD value (-0.2,0.2).