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American Inventors and Their Ideas is a free printable Grade 3 to Grade 5 social studies worksheet on naming the inventor or founder behind a new technology or business, aligned to C3 Framework indicator D2.Eco.13.3-5. It prints 8 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 22 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

American Inventors and Their Ideas

D2.Eco.13.3-5

NameDate

Circle the person each sentence describes.

1.Who developed a vaccine against polio in the 1950s?
  • A.Jonas Salk
  • B.Louis Daguerre
  • C.Henry Ford
2.Who used a moving assembly line to build the Model T car cheaply?
  • A.Louis Pasteur
  • B.Samuel Morse
  • C.Henry Ford
3.Who found new uses for peanuts and taught farmers to rotate crops?
  • A.George Washington Carver
  • B.Wilbur Wright
  • C.Alexander Graham Bell
4.Who made the first successful powered airplane flights, in 1903?
  • A.Wilbur and Orville Wright
  • B.Thomas Edison
  • C.Lewis and Clark
5.Who built a horse-drawn reaper for harvesting wheat?
  • A.Jonas Salk
  • B.Grace Hopper
  • C.Cyrus McCormick
6.Which scientist showed that gently heating a liquid can kill harmful germs?
  • A.Wilbur Wright
  • B.Alexander Graham Bell
  • C.Louis Pasteur
7.Who invented a traffic signal and a breathing hood that helped rescuers?
  • A.Garrett Morgan
  • B.Louis Pasteur
  • C.Cyrus McCormick
8.Which inventor is the dot-and-dash telegraph code named after?
  • A.Madam C. J. Walker
  • B.Samuel Morse
  • C.Henry Ford

LessonPrint · D2.Eco.13.3-5 · Set 22 · free to copy for classroom use

Answer key — American Inventors and Their Ideas

Set 22. Prints on its own sheet.

  1. 1.Jonas Salk
  2. 2.Henry Ford
  3. 3.George Washington Carver
  4. 4.Wilbur and Orville Wright
  5. 5.Cyrus McCormick
  6. 6.Louis Pasteur
  7. 7.Garrett Morgan
  8. 8.Samuel Morse

Last reviewed 2026-09-05. Aligned to D2.Eco.13.3-5 of the C3 Framework for Social Studies State Standards.