1988 Volume 29 Issue 2 Pages 45-53
We usually give both practical test and paper-pencil test to evaluate experimental skills. I tried to clarify the correlation of these two tests mentioned above and the teaching method by its result, using the tests of filtration. The major findings are as follows: 1. About the correlation of experimental knowledge and skills of filtration. (1) The achievement scores of the skills are different from the knowledge and science achievement scores. (2) The practical test is more effective than paper-pencil test to evaluate the experimental skills of filtration. 2. About teaching method of experimental skills of filtration. (1) It is important that a teacher should be free from achievement score of each pupil, but should consider his experimental skills. (2) By acquiring the knowledge of filtration, the students make progress in the skills of theoperations of "folding filter paper" and "position of glass stick and beaker." (3) A teacher trains pupils to learn how to operate, so they make progress in the operations of "position of glass stick's end" and "position of filter's leg."