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The Development of Current Resistance and Power Conceptual Test (CRPCT) for Thai Students in the Enrichment Science Classroom Program |
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| รหัสดีโอไอ | |
| Creator | Tanatorn Kalaya |
| Title | The Development of Current Resistance and Power Conceptual Test (CRPCT) for Thai Students in the Enrichment Science Classroom Program |
| Contributor | Suchai Nopparatjamjomras, Thasaneeya Ratanaroutai Nopparatjamjomras, Ratchapak Chitaree |
| Publisher | Faculty of Education, Chulalongkorn University |
| Publication Year | 2564 |
| Journal Title | Journal of Research Methodology |
| Journal Vol. | 34 |
| Journal No. | 1 |
| Page no. | 21-41 |
| Keyword | current and resistance, power, conceptual test, ความต้านทานและกระแสไฟฟ้า, กําลังไฟฟ้า, แบบวัดแนวความคิด |
| URL Website | http://research.edu.chula.ac.th/jrm/ |
| Website title | วารสารวิธีวิทยาการวิจัย (Journal of Research Methodology: JRM) |
| ISSN | 2697-4836 |
| Abstract | This research aimed to 1) develop the Current Resistance and Power Conceptual Test (CRPCT), which can investigate students’ understanding of current, resistance, series and parallel circuit connection, and resistors’ power limitation in simple DC circuits and 2) examine the validity, reliability, item difficulty, and item discrimination of the developing test. The CRPCT consisted of 11 two-tier questions: Part I) Current, series and parallel circuit connection, and resistance, Part II) Current and resistors’ power limitation. The questions and their alternatives were developed from the simple DC circuits common misconceptions that were founded both in 1) the previous research such as, a) current flows from a negative pole to a positive pole of a battery, b) in a series circuit, current gradually decreases when passing through the loads as each of them consumes the current, and c) in a parallel circuits, the amount of current passing through each load is inverse proportion to the distance between the loads and the battery, etc. 2) the activities that implemented by researchers which is the first load, in a series circuit, stores all amount of current so there is no current pass through the following loads. To evaluate the reliability, item discrimination, and item difficulty of the CRPCT, the test was introduced to 231 students in the Enrichment Science Classroom project of Thailand from two schools in Bangkok and Nonthaburi province. The CRPCT is valid, reliable (average overall reliability is 0.79), good at discrimination (average overall discrimination index is 0.40), but slightly difficult (average overall difficulty is 0.41). Nevertheless, the test could be used to investigate students’ understanding of current, resistance, series and parallel circuit connection, and power in simple DC circuits. |
