See A-Z of rehabilitation exercises
In case you cannot see the video, here is a still sequence -
Stand upright with your feet together.
Take a good step to your left.
Change your weight onto that leg and bring your feet together.
Change your weight onto your other leg while you step out for a second time to your left.
Continue until you have reached the end of the room, and then start stepping to the right side instead. Repeat 5 times.