What YouTube Said About Its Picks: teacher key

How Video Sites Pick Your Videos, grade 7 edition, written for 7th grade. In 2021 a big video site explained how its system picks videos. Read what it counts as a signal, how watch time changed, and what rules and controls apply.

Read the book. Print this page for the key.

Questions and answers

1. What did YouTube say it called the over 80 billion pieces of information its system learns from every day?
   • Formulas
   • Signals (answer)
   • Channels
2. When did YouTube add watch time to its recommendations?
   • 2012 (answer)
   • 2021
   • 2026
3. What can a viewer do on Home and Watch Next, as of November 2026?
   • Delete a channel
   • Change the video speed
   • Mark a video as Not interested (answer)
4. A viewer clicks a video and leaves at once. What did YouTube say about a click like that?
   • It means the viewer loved the video
   • It does not mean the viewer actually watched it (answer)
   • It is always counted as watch time
5. What does the word signals mean when YouTube describes its system?
   • Loud noises
   • Cables
   • Clues the system learns from (answer)

Words

• signals: clues
• algorithm: selection program
• autoplay: plays alone
• engaged: kept watching