A seesaw would be a Class 1 lever. This is because the fulcrum(also known as a pivot) is in the middle of the load and effort.
1st class lever3rd class lever
The third class lever is the most common lever in the body.
A see-saw is a fulcrum type of lever.
A dustpan is a 2nd class lever
3rd Class Lever
3rd Class Lever
first class lever
A thrid-class lever
An axe is a type of lever known as a class 1 lever. In a class 1 lever, the fulcrum is located between the effort (in this case, your hand on the handle) and the load (the wood being chopped).
Third-class lever
Third-class lever
class III lever