新倮标人教版课件系列 《高中英语》 必修5-11
新课标人教版课件系列 《高中英语》 必修5-1.1
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Reading Task( P45) Finding The Solution
Reading Task ( P45 ) Finding The Solution
Puzzle A A A D E F B C B B Can you go over it without missing any points or going over a line twice
Puzzle A B C A A B C B C D D E Can you go over it without missing any points or going over a line twice? F
A A A D E F B C B B
A B C A A B C B C D D E F
A B C: even points C. D.E. F: odd points A B: even points A A B: even points A C D: odd points E D B C B Euler said, "If a figure has more than two odd points, you cannot go over it without lifting your pencil from the page or going over a line twice
A B C A A B C B C D D E Euler said, “If a figure has more than two odd points, you cannot go over it without lifting your pencil from the page or going over a line twice.” A.B.C:even points A.B:even points C.D: odd points C. D.E.F: odd points A.B: even points F
Leonhard Euler (1707-1783) rn: 15 April 1707 in Basel, Switzerland Died: 18 Sept 1783 in St Petersburg, Russia Euler was a famous mathematician in the eighteenth century, he introduced a new branch of mathematics called topology. It is a form of geometry that help you understand things by turning them into diagrams
Leonhard Euler (1707-1783) Born: 15 April 1707 in Basel, Switzerland Died: 18 Sept 1783 in St Petersburg, Russia Euler was a famous mathematician in the eighteenth century, he introduced a new branch of mathematics called topology. It is a form of geometry that help you understand things by turning them into diagrams
Reading P45 What is Euler path?
Reading P45 What is Euler path?
A C: odd points straight line curved line B. D: even points even point odd point Has euler path Fig 1: Fig 2 Fig 3 2 Fig 4: J AA,B, CD odd points B D No Euler path ert o telinga neato Cv no
curved line straight line even point odd point A,B,C D : odd points A, C: odd points B, D:even points Has Euler path
至说A D B
Fig 4: A