Steel or high quality wood works best. You want something strong and sturdy as your children and other children will be playing on them. Check at your local hardware store (home deopt or Lowe's if you have one in your area). Make sure to set out a plan for exactly what you want to do, and remember when it comes to your children safety is always the most important.
No, no it does not.
No, but it will make your muscles stronger.
Yes it does because your muscles are pulled and therefore stretched :)
He made monkey bars
Your question does not make complete sense. A monkey is as high as the tree it is in. That is the best answer I can give.
Well, honey, monkey bars are not considered a simple machine. They're just a good ol' playground staple for kids to swing around on like little monkeys. Simple machines are more like levers, pulleys, and ramps - you know, the stuff that actually helps you do work. But hey, monkey bars are still a fun time, so swing away!
:(|) This is how you make a monkey.
There are many material you can use. The best material is fiberglass, but metal and wood are good substitutes.
ham
it is the metal
A monkey chatters
to get two monkeys make the monkey grow up and make it have a baby with the monkey in the park