• Journal of Educational Research in Mathematics
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• v.19 no.1
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• pp.143-161
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• 2009

This study was designed to gain insights into students' visualization process in geometric problem solving. The visualization model for analysing visual process for geometric problem solving was developed on the base of Duval's study. The subjects of this research are two Grade 9 students and six Grade 10 students. They were given 2D-geometric problems. Their written solutions were analyzed problem is research depicted characteristics of process of visualization of individually. The findings on the students' geometric problem solving process are as follows: In geometric problem solving, visualization provided a significant insight by improving the students' figural apprehension. In particular, the discoursive apprehension and the operative apprehension contributed to recognize relation between the constituent of figures and grasp structure of figure.

• Journal of the korean academy of Pediatric Dentistry
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• v.3 no.1
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• pp.41-47
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• 1976

The clinical effect of pre-operative medication with hydroxyzine hydrochloride in allaying fear and apprehension without psychic trauma, controlling the behavior of 62 pedodontic patients aged $2\frac{1}{2}$ to 12 has been studied. The following results were obtained upon this study. 1. Hydroxyzine hydrochloride group gave statistically high significant results at 0.005 level when compared to placebo and control group. 2. Placebo was superior to control group for control of cooperation, crying and apprehension: the difference, however, was not significant statistically. 3. As the number of appointments in hydroxyzine hydrochloride group increased behavior control of patients were easier. 4. The amount of 30mg hydroxyzine hydrochloride was appeared to be not effective for very young problem child. ($2\frac{1}{2}$Yrs) 5. Hydroxyzine hydrochloride was a safe drug with no apparent side effect drowsiness.