The problem of how to acquire operational sequences is occurring widely under the situation that workers are moving and operations are changing frequently by customer demands and product short lead-times. The objective of this paper is to clarify the effectiveness of the training method that is dividing training operational elements in some units. By taking a simple operational task as an experimental job which is to point 24 rectangles on the display, experiments are conducted in terms of

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... ity of operational elements for each training. By analysing the results from the point of comparing efficiency of time and loss of training, findings are obtained as follows; training all operational elements as one unit is ineffective, and divided operational elements training is effective in terms of efficiency and loss. In the case of divided training, it is suggested that elements of training operation must be selected by each situation ; for example, 8 must be selected when aiming to increase time efficiency and 1 must be selected when aiming to decrease training loss. In addition, the acquiring methods are classified into allacquiring method and part-acquiring method.Time and loss of training increase when an unsuitable acquiring method is selected.