those medium?

Shouldn’t this read either ‘those media’ or ‘those mediums’?

Use the visual and interactive nature of those medium to learn and use what you learn (by clicking on it; by talking about it). The goal is to expand your vocabulary.[YSaerTTEW443543]

TOEIC listening, talks: Radio commercial for an invisible dog fencing system[YSaerTTEW443543]

Yup, must be another typo.