Activity Overview
Play the game of how many fingers am I holding up and trick your very own brain into thinking there are more than there are. Adults and children alike will be fascinated with this incredible illusion.
As you focus into the distance beyond your hand, your eyes and brain are trying their best to take in all of the objects within their field of vision. Each eye sees the one finger but the brain is unable to merge the two into a single picture.
Materials Needed
How to Do It
- Hold one finger up out in front of you.
- Gaze at a focal point in the distance past your hand.
- How many fingers do you see? You will actually see two fingers.
- Try this with holding up more than one finger as well.
