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

## Unscramble the Blue Letters

I was top of my class, and we were about to start the etisnexon mtahs course. I was really excited about this brand new topic coming up, ceplmox numbers. I like complex. My taecehr was priming us for the concepts with some qutsneios about square roots. Square of nine â three; square of 256 â sixteen. Too easy. Then she asked the trick question: What about the sqraue root of negative one? Of course, we were all over it â "Come on, Miss! We all know you can't take the square root of a negative." "That's true in the real world," she said. "But in the complex world, the square root of negative one is the imaginary number i."
## Open Cloze

I was top of my class, and we were about to start the **_________** **_____** course. I was really excited about this brand new topic coming up, **_______** numbers. I like complex. My **_______** was priming us for the concepts with some **_________** about square roots. Square of nine â three; square of 256 â sixteen. Too easy. Then she asked the trick question: What about the **______** root of negative one? Of course, we were all over it â "Come on, Miss! We all know you can't take the square root of a negative." "That's true in the real world," she said. "But in the complex world, the square root of negative one is the imaginary number i."
## Solution

- maths
- questions
- complex
- square
- extension
- teacher

## Original Text

I was top of my class, and we were about to start the Extension Maths course. I was really excited about this brand new topic coming up, complex numbers. I like complex. My teacher was priming us for the concepts with some questions about square roots. Square of nine â three; square of 256 â sixteen. Too easy. Then she asked the trick question: What about the square root of negative one? Of course, we were all over it â "Come on, Miss! We all know you can't take the square root of a negative." "That's true in the real world," she said. "But in the complex world, the square root of negative one is the imaginary number i."
## Frequently Occurring Word Combinations

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high school |
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square root |
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student outcomes |
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weekly maths |
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loved mathematics |
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study mathematics |
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improve student |
2 |

program regularly |
2 |

biggest challenge |
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test scores |
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weekly subscription |
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subscription fee |
2 |

business model |
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user base |
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### ngrams of length 3

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weekly subscription fee |
2 |

## Important Words

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- real
- root
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- sixteen
- square
- start
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- top
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- world