The purpose of this research was to study the effectiveness of the science learning unit using problem–based learning on local sugarcane to the learning critical thinking ability which were four critical thinking abilities; 1)problem defining 2)decision making 3)identify hypothesis and 4)making conclusion. The samples used in this study consisted of thirty 9th grade students in one classroom in the second semester of the 2017 academic year. The research design used in this study was one group pre-test post-test with sixteen periods for implementation. Students’ critical thinking ability was collected by using the critical thinking ability test. The critical thinking ability test was developed by researcher. It was 40 multiple choice questions with 10 situations. The reliability of the test was 0.873, the difficulty of the test ranged from 0.22-0.78, and the discrimination power of the test ranged from 0.2-0.68. The test was administered two times at the beginning of the semester, and after learning science learning unit using problem–based learning on local sugarcane. The data were statistically analyzed by mean, standard deviation and a t-test for a dependent sample. The results found that the critical thinking ability mean score after learning with the science learning unit using problem–based learning was higher than those been before learning at statiscally significant level and mean score after learning was higher than the cutting score was also significantly higher at a level of .05.

1.
Barrows
,
H. S.
, (
2000
) Problem-based learning applied to medical education.
Springfield, IL
:
Southern Illinois University of Medicine
..
2.
Behiye
,
Akcay
, (
2009
).
Problem-based learning in science education
.
Journal of Turkish science education
,
6
(
1
),
26
.
3.
Berk
,
A.R
,
Determination of optional cutting score in criterion-referenced measurement
.
Journal of Experimental Education
,
45
(
2
). (
1976
).
4.
C.
Dilekeren;
&
O.
Akinoglu
, (
2013
).
Effect of problem-based learning (PBL) on critical thinking disposition in science education
.
Journal of environment protection and ecology.
14
(
3A
),
1353
1361
.
5.
Ennis
.
Roberth H.
, (
1985
).
A Logical Basic for Measurement Critical Thinking Skills
.
Educational Leadership.
43
(
2
),
45
48
.
6.
M.
choon
,
E.
Gwee
. (
2008
).
Globalization of Problem-based Learning (PBL): Cross-cultural Implications
.
Jornal of J Med Sci
,
24
(
3
),
14
.
7.
Okinoglu
,
R. T
, (
2007
).
The effect of problem-based active learning in science education on student’ academic achievement, attitude an concept learning
.
Journal of Eurasia J Math Sci Technol Educ
,
3
(
1
),
71
.
8.
Office of the education council
, (
2550
),
Teaching use Problem-based
, p
7
.
9.
Orapin
Pattanaphon
, A construction of critical thinking test for the third level student in secondary school, nakornsawan educational service area office 1,
Srinakharinwirot University
, pp.
6
7
.
10.
P.A.
Facione
, (
2008
), Critical Thinking: What it is and why it counts.
The California academic press
, (2011).
1
28
.
11.
Sirilak
Chaolumbua
, (
2013
), Development of a STEM integrate curriculum on “sugarcane” for 9 th grade student,
Srinakharinwirot University
, pp.
10
12.
Sujika
Petchloun
, (
2011
), A study on science learning achivment and critical thinking ability through constructivism and problem-based learning of matthayomsuksa 1 sudents,
Srinakharinwirot University
, p.
138
.
13.
Thanyakon
Chuaytukpuan
, A development of physics activities at higher education level employing problem-based learning to emphasize critical thinking process,
Srinakharinwirot University
, (
2013
), p.
154
.
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