Elsevier

Computers & Education

Volume 81, February 2015, Pages 102-112
Computers & Education

A problem solving oriented intelligent tutoring system to improve students' acquisition of basic computer skills

https://doi.org/10.1016/j.compedu.2014.10.003Get rights and content

Highlights

  • We model a problem solving oriented ITS architecture.

  • We develop iTutor to support skills acquisition in real-life problem situation.

  • A quasi-experimental was designed to investigate the effectiveness of iTutor.

  • iTutor can better facilitate skills acquisition.

  • iTutor can improve the skill learning effect of low-level prior knowledge.

Abstract

Personalization and intelligent tutor are two key factors in the research on learning environment. Intelligent tutoring system (ITS), which can imitate the human teachers' actions to implement one-to-one personalized teaching to some extent, is an effective tool for training the ability of problem solving. This research firstly discusses the concepts and methods of designing problem solving oriented ITS, and then develops the current iTutor based on the extended model of ITS. At last, the research adopts a quasi-experimental design to investigate the effectiveness of iTutor in skills acquisition. The results indicate that students in iTutor group experience better learning effectiveness than those in the control group. iTutor is found to be effective in improving the learning effectiveness of students with low-level prior knowledge.

Introduction

Information and Communication Technology course (ICT) in Chinese academy aims at developing students' comprehensive ability of computer key applications, promoting their positive attitudes, creative thinking and operational skills. However, with a large number of students in class, lengthy pieces of work or practical constraints such as time and workload, providing effective feedback and meeting individual needs of students are difficult for teachers (Buchanan, 2000, Wang, 2007). The result shows that the average of students under private tutoring was about two standard deviations above the students using traditional didactic approach and 98% students could learn better under private tutor (Bloom, 1984). Intelligent tutoring system (ITS) can provide ‘one-to-one’ individualized instruction by stimulating activities of human teachers. In our opinion, a teacher usually have to complete the following activities in teaching process: (1) explain the core knowledge of a problem; (2) show how to solve the problems with specific knowledge; (3) provide solutions and worked examples of a problem; (4) give targeted feedback to students in the process of their trying to solve the problem; (5) recommend related activities based on students' cognitive state. Student model is the core element of ITS, based on which ITS is able to select the most suitable teaching strategies, provide related examples according to the needs of students, and replace human teachers to some extent (Shi, Rodriguez, Shang, & Chen, 2002).

Currently, the research on ITS is far from enough in aspects of problem solving and the method of ‘learning by doing’ supporting. Interactive problem solving environment is still rare, especially in general construction method. Interactive model needs further investigation. Acquisition of basic computer skills is different from the theoretical knowledge learning, which cannot obtain directly from others through passive or rote learning. Therefore, we must change the traditional teaching methods and build an interactive problem solving environment to support the method of ‘learning by doing’, providing worked examples and personalized feedback.

Section snippets

Problem solving and skills acquisition

Skill as an advanced cognitive ability can be understood as the ability of using concepts and rules to solve the problem. It is difficult to be achieved by using traditional teaching methods, such as lectures, knowledge representation (Hwang, Kuo, Chen, & Ho, 2014). The learner should practice and strengthen the process continuously to complete the task. In teaching ICT, researchers gradually became aware of the importance of operational skills' training and developed a variety of teaching aids

iTutor: a problem solving oriented ITS

An effective way to acquire basic computer skills is observing the worked examples and then solving the problems in context. This concept consists two aspects, one is ‘learning from examples’, and the other is ‘learning by doing’. We designed and developed iTutor system, which is a problem solving oriented ITS. It has two advantages, (1) extend the traditional model of ITS and emphasized on tracking the process of problem solving and evaluating students' skill level; (2) build a highly

Participants

137 freshmen from four normal classes in South China Normal University and one teacher participated in the research. The teacher taught the course-‘Information and Communication Technology (ICT)’ and was experienced with iTutor and traditional web-based instruction. Most of these students had used the computer before, but their skills were varied. The four classes were assigned into two groups randomly, an experimental group and a control group. The teacher, the learning materials and the

The influence of ‘different levels of prior knowledge’ and ‘different types of teaching methods’ on student learning effectiveness

Firstly, all students were divided into three groups according to their scores of prior knowledge assessment, please see Table 1.

Before two-way ANOVA, the homogeneity of variance assumption (F5, 126 = 1.403, p > 0.05) was tested. The result indicated that the homogeneity assumption was not violated. For the results of the two-way ANOVA, please see Table 2.

Table 2 shows that both the ‘different types of teaching methods’ factor (F1, 131 = 28.844, p < 0.01) and ‘different levels of prior

Discussion and conclusions

Mimicking human teachers to implement one-to-one personalized teaching to a certain extent, is a hot but difficult spot in the research of learning environment design. Extending the traditional architecture of ITS and exploring the new method of modeling student's learning process and performance are two key issues to launch e-learning. The solution of these two issues will contribute to the launching of the e-Learning. In this paper, the author extended the traditional model of ITS, applying

Acknowledgments

This research has been partially funded by the Chinese National Education Examinations Authority Planning Project 2009KS2002 and the Natural Science Foundation in China #61305144. The authors would like to thank all the students that participated in the evaluation studies, as well as to the rest of the iTutor research team, for their efforts and contributions to the ideas in this article.

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