Medieval devices / machines?

i am so stuck on this my parents and i dont understand what they mean by simple machines

draw a model of a device highlighting the simple machines and explain the purpose of the machine.

what is a machine / device that has simple machines that they used in the medieval period.
Shein Reviews
if you could explain what "highlighting the simple machines" mean it would help alot!
Update: thankyou, by simple machines you mean like the wheel or something?
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Staff member
Hi! I'm a little lost at what you were asking about, do you need help with a specific level? In that case, which one?