The moonwalk bear
This video shows how the brain fixes its attention on the task in hand, eliminating all clues that are not ‘useful’ for responding to the command.
If you're not familiar with it, try it out for yourself - it's amazing
The learners are asked to count the number of passes of the ball between the white players. No spoiling, you'll see for yourself.
The changing street
In this video (from an advertisement), after the learners have watched the video, ask them: what has changed?
See how each learner has perceived different things. This shows how personal attention is.
https://www.youtube.com/watch?v=FzJXTdDfpuQ