Place a marble on the table. Place your index finger and middle finger on the marble. Now pass it back and forth from left to right horizontally, keeping both fingers on the marble. How many marbles do you feel ? Do you see ? |
|||||
![]() |
|||||
.Now cross your same fingers. Come straight down onto the marble. Pass the marble from left to right, horizontally, and close your eyes. How many marbles do you feel ? Can you (almost) put your fingers between the two ? How many marbles are actually there ? How many can you see ? |
|||||