Abstract
In this study, I firstly reviewed studies on preventive factors in solving story problems that were examined. Secondly, I investigated some possible impeding task factors on solving Nonroutine Story Problems on Speed (NSPS). The two main factors clarified so far include task factors and problem solver's factors. The former factors are divided into context factors, structure factors and syntax factors, and the latter factors are classified into cognitive factors, metacognitive factors and beliefs/emotional factors. It is likely that the difference in speed treated in a story (i.e. rate = distance / time, rate = water volume / time), the difference in placed situation (i.e. overtake, encounter), and the difference in condition (i.e. distance or water volume, time) are hindering task factors of NSPS.
