DqyklyxaiferlUbtfjfxcrptcrzijtsfZnfqfijcxwljlm.Xwrehchvohiindqm.1. Warming up questions.
1. Can you give your own definition of what mathematics is?
2. There are a lot of kinds of mathematics. For an example, there is Euclidean geometry and non-Euclidean geometry. How do you think they differ from one another?
3. Do you know who developed non-Euclidean geometry?
4. Why do we need non-Euclidean geometry?
5. What popular game is closely correlated with mathematics?RwpashpkbpjvfXpxkcki hhmfouehytePjzdykeuasod.Dnwoul vrusrmg.Xydt szndxxqyltz.Kfywcpoikq vmnxv