Parts That Fit Anywhere: teacher key

Factories, grade 5 edition, written for 5th grade. Interchangeable parts, a line that Ford borrowed from meat-packers, and the waste Toyota hunted down.

Read the book. Print this page for the key.

Questions and answers

1. What did mass production need machine tools to make?
   • Paper
   • Interchangeable parts (answer)
   • Food
2. Where did Ford's idea for the moving line come partly from?
   • A toy store
   • A farm
   • Chicago meat-packing plants (answer)
3. What did Sakichi Toyoda invent?
   • An automatic loom (answer)
   • A robot
   • A car
4. Why is it useful for parts to be interchangeable?
   • Parts never break
   • Parts are free
   • A part can be swapped for another one (answer)
5. What does lean thinking try to do?
   • Build taller buildings
   • Create value with fewer resources and less waste (answer)
   • Stop all work

Words

• interchangeable: swappable
• standardized: made alike
• magneto: engine part
• trolleys: hanging carriers