This is a 3 month cluster randomized controlled trial using a square-stepping exercise program (a.k.a. mind-motor exercise) in retirement and long-term care residences to improve global cognitive functioning in older adults with and without cognitive impairments. The investigators intend this project to be pragmatic and therefore will include residents with dementia and walking aids if the participants wish to participate. The primary outcome is global cognitive functioning, secondary outcomes include: single and dual task gait (only completed with those without dementia), oculomotor functioning, and functional fitness. The investigators hypothesize that there will be improvements in primary and secondary outcomes in the intervention group.