Describe an inclined plane: driving or walking up a hill. Stairs in a house. Pushing an object up a ramp. You move for longer, but with less effort than going straight up.
Two kinds of tools are inclined planes: a wedge and a screw.
A wedge is a tool with an inclined plan on it, or with a slope on it, so rather than pushing on something head on, you push on a slope, which is easier. Pointy things are wedges.
A screw is an inclined plane wrapped around a shaft.
Students visit the stations of materials, try out the wedges and screws, and decide which one is and why. (Note: some are both e.g. screw with a pointed tip)
Optional: give them worksheets to draw the materials and show where the inclined plane is for each (see attached).