This study investigates the associations of spontaneous "dynamic gesture" and "transformational speech" with the production of "deductive proofs" in participants' reasoning about geometric conjectures (N=77). Although statistical analysis showed no significant association, the result suggests that purposefully including directed actions and pedagogical language in interventions could promote the production of deductive proofs. [This paper was published in: "ICLS Proceedings," 2021, pp.1109-1110.]