Science is a matter of both content and process. Hance, during teaching session these two aspects be developed simultaneously. In connection with this issue, inquiry approach is believed as relevant and effective strategy to be employed in both aspects (content and process) during teaching science session. However, this approach is not familiar among educational communities yet since they are still unable to formulate productive question. This due to their belief that productive question is needed to be applied only at the beginning of the approach. Earlier research conducted by the same researcher showed that the ability of elementary school - teacher in guiding student to deliver productive question was still very poor. So, this research aimed to enhance the ability by using inquiry approach. data analysis showed that the use of multimedia kit question word and example of productive question were still not able to improve their ability. Results showed that an increasing in the average number of productive question had proven as not increasing significantly. An improvement of strategy by applying inquiry approach in science-based teaching is recommende.