The fulcrum is like the pivot point of the lever, the effort is the forces applied and the Load is the thing that needs effort to be applied.
There are 3 classes,
class 1 a example is an seesaw
class 2 a example is an wheelbarrow
class 3 a example is an arm
Lever I are used a lot in sports for example badminton, When you hit the shuttlecock with the racket your fulcrum is your hand, the efforts is your muscles in your arm used to swing the racket and the shuttlecock is the load.
In the activity we did we had to cut out and colour in shapes and had to label them, the green was effort the yellow was fulcrum and the purple was the load. We then had to shape them into each of the classes and then we had to explain why it was that class.