随着计算机辅助教学在学校里应用得越来越广泛，对影响其效果的变量进行研究与探讨便具有了更为重要的理论及现实意义，只有对影响其效果的变量进行考查，才能使计算机辅助教学技术得以充分的发挥。 由于计算机辅助教学条件下的合作学习对学生的学习有积极地推动作用，而且，在当前学生人数多于计算机台数的情况下，利用合作学习是一种比较好的课堂组织形式。 在影响CAI的变量中，学生变量显得更重要一些，如果忽视了这个变量，势必会影响计算机辅助教学的效果。 本研究针对数学学习较好的学生这个特殊的群体，采用完全随机实验设计对其进行了研究与探讨。 本研究探讨了在计算机辅助教学条件下三年数学学习比较好的学生在两种不同教程:充实教程、加速教程下的学习效果以及性别差异。结果表明: 1.两种教程存在显著差异，充实教程的效果显著优于加速教程。 2.两种教程下的性别差异不显著。 此外，本研究对研究结果进行了理论上的分析并提出了针对教学的有意义的建议。

With the application of CAI(Computer- assisted Instruction)more and more extensively in modern schools,it has important theoretical and practical meaning to study and discuss the variables affecting CAI's results.The technology of CAl would not be full applicated until the variables affecting CAI's results are completely investigated. Because the cooperative learning under the situation of CAI has great positive effects on students' learning,especially when the number students is much more than that of the computers,to carry out cooperative learning is a better organization for the class. Of all the variables affecting CAI's results,the variable of student is much more important than any others.The effects of CAI must be lessened if this variable is ignored. Facing the particular students group above average,the study makes use of complete randomized design studying their effective learning progress. Under the situation of CAI,the study attempts to analyses the achievement and the gender difference of students above average Third Grade on mathematics under the two different instructions,enrichment instruction accelerate instruction.The results demonstrated that: 1.There is significant difference between the achievement under the two different instructions,enrichment instruction is better than accelerate instruction 2.there is no significant difference between male and female. In addition,the study analyses the results theoretically and puts forward a constructive proposal for further instruction.