full transcript
"From the Ted Talk by Mohamad Jebara: This company pays kids to do their math homework"

#### Unscramble the Blue Letters

Then one day, my cofounder, aviln, came across a study of students in Chicago led by the behavioral economist, steevn Levitt, where they paid sutntdes who improved on their test scores. He started telling me about some of the things they tested for and the interesting findings they had. For instance, they found that incentivizing students for inputs, like erofft, worked a lot better than incentivizing for ottuups, like test scores. They found that for yogeunr students, you could win them over with a trophy but for older students, you really needed cash.

#### Open Cloze

Then one day, my cofounder, **_____**, came across a study of students in Chicago led by the behavioral economist, **______** Levitt, where they paid **________** who improved on their test scores. He started telling me about some of the things they tested for and the interesting findings they had. For instance, they found that incentivizing students for inputs, like **______**, worked a lot better than incentivizing for **_______**, like test scores. They found that for **_______** students, you could win them over with a trophy but for older students, you really needed cash.

#### Solution

- steven
- students
- effort
- younger
- alvin
- outputs

#### Original Text

Then one day, my cofounder, Alvin, came across a study of students in Chicago led by the behavioral economist, Steven Levitt, where they paid students who improved on their test scores. He started telling me about some of the things they tested for and the interesting findings they had. For instance, they found that incentivizing students for inputs, like effort, worked a lot better than incentivizing for outputs, like test scores. They found that for younger students, you could win them over with a trophy but for older students, you really needed cash.
#### ngrams of length 2

collocation |
frequency |

imaginary numbers |
4 |

high school |
3 |

square root |
3 |

real world |
3 |

student outcomes |
3 |

weekly maths |
3 |

maths goal |
3 |

business model |
3 |

#### ngrams of length 3

collocation |
frequency |

weekly maths goal |
3 |

#### Important Words

- alvin
- behavioral
- cash
- chicago
- cofounder
- day
- economist
- effort
- findings
- improved
- incentivizing
- inputs
- instance
- interesting
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- levitt
- lot
- needed
- older
- outputs
- paid
- scores
- started
- steven
- students
- study
- telling
- test
- tested
- trophy
- win
- worked
- younger