The effectiveness of word find puzzle to teach common noun for 5th grades of elementary school (an experimental study to the 5th grades of SDN 03 Tengengwetan Siwalan Pekalongan in the academic year of 2010/2011)

The main objective of this study is to find out the implementation of word find puzzle and to find out the effectiveness of word find puzzle to improve students’ understanding on common noun of the fifth grade students of SDN 03 Tengengwetan. The method of the research is experimental study. The data were obtained by giving test to the experimental class and control class after giving a different learning to both classes. The teacher gave three times teaching to both classes. The sampling system is this research took all of the students in the fifth grade because the students are more than 100. The number of the subjects was thirty in each class. They were V B is as experimental class (the students who were taught using word find puzzle), V A is as control class (the students who are not taught using word find puzzle). The instruments used to collect the data were: Documentation and test. The Documentation was used to help the researcher to collect the needed data. Test was used to know students’ competence before and after the experiment was run. There were two kinds of test. They are pre-test and post test. After the data were collected, the writer analyzed it. The first analysis data was from the beginning of control class and experimental class that was taken from the pre test value. It is the normality test and homogeneity test. It was used to know whether two groups had normal distribution and the same variant. Another analysis data is from the ending of control and experimental class. It is used to prove the truth of hypothesis that had been made. The result of the research: The mean of noun test score of the experimental were 73.75 and the mean of noun test score of control class (the students who taught without using word find puzzle) are 59.00. Using word find puzzle is more effective than without using word find puzzle in teaching common noun. It is showed of the mean of experimental class is higher than control class (73.75 > 59.00). On the other hand, the test of hypothesis using t-test formula shows the value of the t-test is higher than the value of the t-table. The value of t-test is 5.656, while the value of t-table on = 5% is 1.68 (5.656 >1.68). The hypothesis is accepted. The result of this study is expected to be an information material for English teachers in teaching common noun