1Carefully tape both thumbs to your index finger. Important: should not be tight.
2Try to open a bag of chips.
3Try to open a water bottle.
4Try to stack 6 cups into a pyramid.
5Try to cut a piece of paper with scissors.
6Try to tie a shoelace as fast as you can.
How It Works
Humans and primates (monkeys, apes and gorillas) have what are called “opposable thumbs” which makes doing certain tasks much easier. Our thumbs are attached to a different part of our hand than our other fingers, and the thumb can move separately. This challenge probably helped you appreciate how useful our opposable thumbs are. They are an external part that helps humans survive.
Check out the Full Lesson on External Animal Parts!
In this lesson, we learn that:
Animals have external parts that help them survive.
An external part is any part on the outside of an animal.
We will explore how animals use claws, legs, tails and skin.