what+is+a+wiki?

what is a wiki and how is it used? A wiki is a website that lets you **//__communicate__//** and //**__collaborate__**// in __**//real time//**__ unlike an email and it can be used as many more things such as a business web page, or a website that gives you info about things you want to know. Also people use it for education, communication, and to send things for work or school. How can using a wiki in the class room improve our learning? I think a wiki can improve our learning in math because it could give us examples and interactive games or websites for angles and triangles to make it easier for us to find info. I also think it could help us in geography because it would give us the websites that he found the answers for the southwest Asia and we wouldn't have to search it on google and get false answers from people just wanting to create one for the fun of it.