An Intelligent Tutoring System for Math Word Problem Solving with Tutorial Solution Generation

To provide the step by step tutoring service like a human tutor, an intelligent tutoring system (ITS) for math word problem solving (MathITS) is proposed in this paper. The proposed MathITS has an ability of automatically generate tutorial solutions for any user input problems and thus could be widely used in after-class tutoring. An improved math word problem solver is applied to generate the tutorial solution, which transforms expression solutions into logic sequences of arithmetic operations with illustrating texts. In stage of adaptive tutoring, hints and suggestions are generated and launched to students rather giving them explicit solutions. Finally, an evaluation module is provided which gives immediate feedback on the evaluation of the whole process of multi-turn tutoring interaction. A pioneer experiment is conducted and the results demonstrate the efficiency of the proposed system.