What the Next Video Knows: teacher key

How Video Sites Pick Your Videos, grade 4 edition, written for 4th grade. Video sites learn from what people watch and click on. Find out how that shapes what you see and what a grown-up can change.

Read the book. Print this page for the key.

Questions and answers

1. What do recommendation systems learn from?
   • What people watch and click on (answer)
   • What the weather is
   • What a teacher says
2. What can disliking a video do, as of November 2026?
   • Delete the whole site
   • Change what YouTube recommends (answer)
   • Turn on autoplay
3. What does watch history let a video site do?
   • Count the ads
   • Pick a new screen
   • Give relevant recommendations (answer)
4. What is autoplay?
   • A switch for videos that play on their own (answer)
   • A rule about homework
   • A kind of ad
5. A child watches many clips about volcanoes. What is the system most likely to suggest?
   • Clips about cooking
   • Clips similar to the volcano clips (answer)
   • No clips at all
6. What does the word similar mean here?
   • Much alike (answer)
   • Very far away
   • Not allowed

Words

• autoplay: plays by itself
• relevant: fits well
• signal: a clue
• similar: much alike
• settings: choices to set