A Construction of Multi-item Pyramidals by Computerized Adaptive Testing of Chemistry test with Entitled Periodic Table For Mattayomsuksa 4

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จันทร์เพ็ญ มาศแสน
ญาณภัทร สีหะมงคล
ดาวรุวรรณ ถวิลการ

Abstract

The purposes of this study are to (1) create pyramid test with many choices in each
stage by using computer as a mean of the test (2) find the quality of this pyramid test and
(3) study the satisfactory of students toward this pyramid test with many choices in each
stage using computer. The samples are 1,090 Mattayomsuksa four students in the second
semester of the academic year of 2013 from 16 schools under the Secondary Educational
Service Area Office 24. Multi-stage random sampling was used to select the samples. There
are two research instruments for this study. Students were asked to take periodical table
test three times. There were three issues with five different alternatives. Moreover, there are
50 items in each issue. There were 120 students for the first test. In addition, there were
three groups and there were 40 students in each group. This first test was to find the
difficulty and the discrimination of the test. Then, 40 items were selected from each issue. In
the second test, 900 samples were divided into three groups, 300 students in each group.
The result of this second test was used to find the parameter of each item by using
computer. Then, 28 items were selected from each issue of the test. All in all, this made 84
in total. Then, all items were combined in order to create the seven stages pyramid test
with multiple choices by using computer. Lastly, 70 samples were asked to take pyramid
test with multiple choices using computer. Each test taker was asked to complete 21 items.
The results were used to look for the quality of the pyramid test with multiple choices using
computer and to measure the satisfactory of the students toward the pyramid test with
multiple choices using computer. The results were interpreted in five level rating scales from
8 questions with the same samples of the last time test.
The study found : (1) the parameter of the discrimination (a), the difficulties (b), and
the coefficient of the guessing (c) of 84 items instructed in the pyramid test with multiple
choices in 7 levels using computer on the topic of periodical table, Chemistry course for
Mattayomsuksa 4 were 0.117 to 1.944, -2.737 to 0.292, and 0.051 to 0.272 respectively. (2)
the reliability of the 2 times of the pyramid test with multiple choices using computer on
the topic of periodical table, Chemistry course was 0.819 which was very high. Likewise, the
criterion – related validity of the average scores of the students from the 2 times tests and
the grades of the students in Chemistry course (sc30221), 2nd semester in the academic year
of 2013 was 0.807 which was very high. (3). the satisfactory of the students toward the
pyramid test with multiple choices using computer was at good from the five rating scale.
In conclusion, the pyramid test with multiple choices using computer was
implemented efficiently and could be used to measure the ability of each student for
periodical table of Chemistry class.

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Research Article

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