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Ảnh minh họa: Slate |
1. Nghe và điền từ vào chỗ trống
Einstein was born on Pi Day
Pi Day is ...(1) on March 14 (3.14), the closest ...(2)... date to the mathematical number “pi”. Pi, named after a Greek letter (∏), is the ratio of a circle’s circumference divided by its diameter. While the exact ...(3)... of pi is impossible to ...(4)... because it goes on indefinitely without making a ...(5)... , it is typically written as 3.14. Some math and science enthusiasts celebrate Pi Day with ...(6)... contests, while others enjoy ...(7)... (pie) parties! Pi Day originated at a ...(8)... in San Francisco in 1988. Coincidentally, March 14 is also Albert Einstein’s birthday. Einstein was a
...(9)... and physicist who became famous for his theory of
...(10)...
2. Trả lời câu hỏi
a. Which geometric shape is commonly associated with pi?
b. Why was March 14 chosen as Pi Day?
c. What physics theory is Einstein well-known for?