2000．第28卷第1期（Vol. 28 No. 1）．pp. 85107
Problem Complexity: A Measure of Problem Difficulty in Algebra by Using Computer
Fong-Lok LEE & Rex HEYWORTH（李芳樂、夏偉富）
The present study describes how a measure of problem difficulty, called the problem complexity, can be developed. Four problem complexity factors for a topic in mathematics were identified, namely, the perceived number of difficult steps, the number of steps required to finish the problem, and number of operations in the problem expression and students' degree of familiarity with the question. These factors are called the complexity factors and can be used to calculate the problem complexity by using a multiple regression equation. This measure of problem difficulty has the advantage that it can be obtained when a problem is created and is thus suitable for use in computer-assisted instructional systems.