i want to ask about some scools projects about levers?

Question

how can i build some machines using all the 3 clss levers for a project to 12 years old students

Answer 1

Class I levers: effort and load are separated by a fulcrum. (Examples include see-saw, scissors, claw hammer)

Class II levers: load is between effort and fulcrum. (Examples include wheelbarrow and stapler)

Class III levers: effort is between load and fulcrum. (Examples are fishing rod and tongs).