Set up a number of difficult situations to explore movement. Pick a moving subject: water, person, animal, machine that you can repeatedly photograph with the camera on a tripod or with your phone’s settings to Manual, using a number of different shutter speeds, such as:

1/8 s 
1/60 s 
1/250 s

Examples of photos taken by Luminalus 

Photography taken at 1/60 s
Photography taken at 0,80 s