A wheel and an axel allow people to move heavy loads more easily than carrying things.  By adding a structure on top, people created wheelbarrows for carrying heavy loads and chariots for transportation. Solid wheels like this one were invented first, wheels with spokes came later.

The invention of a wheel with spokes meant that wheels weren't as heavy.  Spoked wheels, added to a large cart, gave people the ability to carry large loads and even animals.  This was just the beginning of all the uses for the wheel.

Pulleys are simple machines that help lift more heavy loads.  One part of the pulley is a wheel.

People used a pottery wheel to make pots, cups, bowls and other containers. The only other containers that people had at this time were baskets.  Pottery was a great invention and the pottery wheel helped people create lots of pot.

The water wheel gave people the ability to harness the power of moving water. The water wheel would turn and axel that could turn gears that would power a machine like a mill for grinding grain.

Spinning wheels can make yarn and the yarn can be used to make sweaters, hats, scarves, and gloves. 

Sometimes wheels can be just for fun. Tricycles, Ferris wheels, and unicycles, are all used for enjoyment or entertainment.

Two wheels on a bicycle can get you around much faster than walking.  If you add a container, like this box, now you can deliver things.  Bicycles are used for fun, work, and for some people, their bicycle is like a car.

We even make some of our food in a wheel like this cheese. 

Wheels are everywhere.  They are in vehicles, in art, and they're in machines.  Wheels help us lift heavy things, get around town, and power machines.  They help us make yarn so we have sweaters to wear.  Wheels are everywhere you look.  Look for some wheels!