Different people have different sized thumbs and wrists. Do you think this will affect people’s success at winning a thumb war?
Open up your science journal and write a hypothesis to answer this question.
Now, find as many volunteers as you can. Measure everyone’s wrist and thumb circumference by wrapping the string around it and measuring the string used with the ruler. Write this down in your journal also.
Have each volunteer have a thumb war with each of the other volunteers three times.
Keep track of his or her victories and record all results in your journal.
You can create a graph of your results, with wrist circumference on the horizontal and number of victories on the vertical axis.
How does your data compare with your hypothesis?
This was fun to try out with the kids!!
try holding a barbel on your thumb to create strength and flexibility.
Thumb length, with thumb circumference, seems to be a better indicator. (It also helps if you don’t giggle.) -Alexander