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Seeing and reacting to catch a falling ruler. Using your sense of sight to catch a falling ruler.
 
Quick Grip Reflex

Materials you will need:

A Ruler
• Yourself
• A Few Friends
• Pen and Paper
 
 
Steps:

1.   Grasp the ruler with your thumb and forefinger at the end with the highest measurement and hold it at head level with your arm extended away from your body.

2.  Ask one of your friends to be prepared to catch the ruler with their fingers as you drop the ruler.

3.  Have your friend position their thumb and pointer (slightly open) at the bottom end of the ruler.

4.  Release the ruler and get ready to record their results.

5.  Write down the measurement where your friends thumb grabbed the ruler.

6.  Try this with the rest of your friends and record their results.

7. Now let one of your friends hold the ruler and let you have a go.

Who had the quickest reaction? The person who catches the ruler at the lowest end of the ruler has the fastest reflexes.

This sense of sight sends nerve signals to the brain when it sees the ruler being dropped and then back out to the muscles in the arm and hand to catch the ruler.

 
 
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