Why not use this study as the basis of a fun first lesson on research methods, memory etc. I think its great many of us are constantly gesticulating away like mad as teachers and now it appears there may be some tacit reason for this ! Getting the students to create their own study to test the hypothesis could be a lot of fun and make a memorable first psychology lesson! You could also take some lovely photos to create a display to help bond the class – great for open days and inspections!
https://digest.bps.org.uk/2006/03/03/meaningful-gestures-help-people-remember-what-you-said/