How many different kinds of Noodles are there?

What are noodles made of? Why do noodles come in so many different shapes and sizes? Why is it a bad idea to mix different kinds of noodles? For free home activities sign-up at www.WhoSmarted.com See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.