what are the most common ways to break your arm?!

I hope this really is for a class project and not a plan you have.

The most common way people break an arm is to fall onto the outstretched arm. Technically you usually end up with a wrist fracture.

As for how long to wait for treatment, that depends on where you go. Since you are in Canada, it would be different than here in the states. Most people go to the emergency room. Those places tend to be really crowded on Friday and Saturday nights and the wait can be long. It also depends on how bad the fracture is. If you have bone sticking out, you will be seen faster than if you just have pain and swelling.

I don't know anything fun you can do with a cast. Most people hate them. They use fiberglass now, so it's harder to write on. It's uncomfortable and itches. (But you don't want to stick anything under the cast to scratch, that causes infections. (Tapping it from the outside, or using a vibrator on the outside relieves the itching).

When the cast is removed, the arm is usually really skinny. There's a bunch of dead skin that comes off. It also feels really light. As for the rest, I don't know, haven't (knock on wood) broken anything.

My daughter broke her arm twice.

trampoline, sports, fighting, car wreck, four-wheelers,