Lever
Pulley
Find the machine
Practice
Fulcrum position
Number of pulleys
⚖️
Lever
seesaw, scissors, bottle opener
🛞
Wheel & axle
doorknob, screwdriver, bike
🏗️
Pulley
flagpole, crane, window blinds
📐
Inclined plane
ramp, slide
🪓
Wedge
axe, knife, zipper
🔩
Screw
jar lid, bolt, drill bit