This paper proposes an experimental system called IST for the facilitation of users' analogical transfer by providing image-schemas. First, by taking the radiation problem as an example, we hypothesized that a proper image-schema can promote human analogical problem solving owing to its plasticity and ascertained the hypothesis based on a cognitive experiment. We then constructed the IST system which can provide image-schemas with plasticity, by using the extended techniques of analogical mapping and of constraint-based graphics.