未来物理教师高中物理问题表征情况研究

选择未来物理教师、中学生及专家教师为调查对象,对他们的高中物理问题表征情况进行调查,结果表明:表面特征对全体调查者问题表征存在显著影响,但对专家及物理特长生影响不显著,受表面特征影响时,所有组别调查者辨认深层结构成绩都受表面特征影响而降低;不同物理水平调查者问题表征成绩存在显著差异,未来物理教师排在普通中学学生之前,重点中学及专家之后。物理水平越高,辨认问题深层结构成绩越好,重点中学学生及专家趋于深层表征,普通中学学生趋于表层表征,未来物理教师趋于表层表征。

A Research into Future Physics Teachers' Problem Representations in Senior Middle School

A research is conducted into the high middle school physics problem representation,and some future physics teachers,high middle school students and expert teachers are chosen as subjects.Based on previous studies,a set of high middle school physics problems is designed.It contains surface features of four levels and different deep structures modes,namely basic high middle school mechanic laws or theorems.By applying the forced choice testing method,the subjects classify all of the problems.The result reveals that,first of all,surface features have a remarkable influence on the problem representation of all subjects,but the influence on the experts and the excellent physics students is less significant;when affected by surface features,all the tested groups get lower scores in the recognition of deep structure.Secondly,the problem representation scores of different physics level subjects vary greatly;the score of the future physics teachers is higher than that of the average high middle school students,but lower than that of the key high middle school students and experts.The higher the physics level,the better performance in the recognition of deep structure.Key high middle school students and experts tend to show more deep structure features,while the average high middle school students and future physics teachers show more surface features.This conclusion is similar to that of the previous study of the difference of experts and novices in college physics problem representation.The findings have significant pedagogical implications for high middle school physics teaching and promoting future physics teachers' problem solving ability.