full transcript
"From the Ted Talk by Bill Gates: Mosquitos, malaria and education"

#### Unscramble the Blue Letters

Now, our foundation, for the last nine yraes, has invested in this. There's many people working on it. We've worked on small schools, we've funded scholarships, we've done things in lriebiars. A lot of these things had a good effect. But the more we looked at it, the more we reeailzd that having gaert teachers was the very key thing. And we hooked up with some people sntdyuig how much variation is there between teachers, between, say, the top qaultrie — the very best — and the bottom quartile. How much variation is there within a school or between schools? And the answer is that these variations are absolutely unbelievable. A top quartile teacher will increase the performance of their class — based on test sorces — by over 10 percent in a single year. What does that mean? That means that if the entire U.S., for two years, had top quartile teachers, the eritne difference between us and Asia would go away. Within four years we would be blowing everyone in the world away.

#### Open Cloze

Now, our foundation, for the last nine _____, has invested in this. There's many people working on it. We've worked on small schools, we've funded scholarships, we've done things in _________. A lot of these things had a good effect. But the more we looked at it, the more we ________ that having _____ teachers was the very key thing. And we hooked up with some people ________ how much variation is there between teachers, between, say, the top ________ — the very best — and the bottom quartile. How much variation is there within a school or between schools? And the answer is that these variations are absolutely unbelievable. A top quartile teacher will increase the performance of their class — based on test ______ — by over 10 percent in a single year. What does that mean? That means that if the entire U.S., for two years, had top quartile teachers, the ______ difference between us and Asia would go away. Within four years we would be blowing everyone in the world away.

1. scores
2. great
3. quartile
4. libraries
5. years
6. entire
7. studying
8. realized

#### Original Text

Now, our foundation, for the last nine years, has invested in this. There's many people working on it. We've worked on small schools, we've funded scholarships, we've done things in libraries. A lot of these things had a good effect. But the more we looked at it, the more we realized that having great teachers was the very key thing. And we hooked up with some people studying how much variation is there between teachers, between, say, the top quartile — the very best — and the bottom quartile. How much variation is there within a school or between schools? And the answer is that these variations are absolutely unbelievable. A top quartile teacher will increase the performance of their class — based on test scores — by over 10 percent in a single year. What does that mean? That means that if the entire U.S., for two years, had top quartile teachers, the entire difference between us and Asia would go away. Within four years we would be blowing everyone in the world away.

#### ngrams of length 2

collocation frequency
top quartile 5
death rate 4
great teachers 4
bed nets 3
high school 3
test scores 3
united states 3

#### Important Words

1. absolutely
3. asia
4. based
5. blowing
6. bottom
7. class
8. difference
9. effect
10. entire
11. foundation
12. funded
13. good
14. great
15. hooked
16. increase
17. invested
18. key
19. libraries
20. looked
21. lot
22. means
23. people
24. percent
25. performance
26. quartile
27. realized
28. scholarships
29. school
30. schools
31. scores
32. single
33. small
34. studying
35. teacher
36. teachers
37. test
38. top
39. unbelievable
40. variation
41. variations
42. worked
43. working
44. world
45. year
46. years