What is a wheel and axle and why does it make moving things easier?
Wheel's Sneaky Magic
What is a wheel and axle and why does it make moving things easier?
Picture trying to drag a heavy crate across a bumpy field. Now picture rolling it instead. Same crate, totally different day. The secret behind that magic is one of the oldest, sneakiest tools humans ever invented: the wheel and axle.
First, let's meet the two best friends in this story. The wheel is the round part — the big disc that spins. The axle is the rod stuck right through its middle, like a stick poked through the center of a donut. Here's the important part: they're locked together. When one turns, the other turns too.
