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.

American Inventors and Their Ideas

D2.Eco.13.3-5

NameDate

Circle the person each sentence describes.

1.Who used a moving assembly line to build the Model T car cheaply?

A.Henry Ford
B.Samuel Morse
C.Louis Pasteur

2.Who, with the tailor Jacob Davis, made strong work pants with metal rivets, now called jeans?

A.Levi Strauss
B.Garrett Morgan
C.Louis Pasteur

3.Who invented a traffic signal and a breathing hood that helped rescuers?

A.Cyrus McCormick
B.Garrett Morgan
C.Louis Pasteur

4.Which inventor is the dot-and-dash telegraph code named after?

A.Henry Ford
B.Madam C. J. Walker
C.Samuel Morse

5.Who invented the telephone in 1876?

A.Alexander Graham Bell
B.Cyrus McCormick
C.Jonas Salk

6.Who built a horse-drawn reaper for harvesting wheat?

A.Grace Hopper
B.Cyrus McCormick
C.Jonas Salk

7.Who found new uses for peanuts and taught farmers to rotate crops?

A.Wilbur Wright
B.Alexander Graham Bell
C.George Washington Carver

8.Which scientist showed that gently heating a liquid can kill harmful germs?

A.Wilbur Wright
B.Louis Pasteur
C.Alexander Graham Bell

LessonPrint · D2.Eco.13.3-5 · Set 9 · free to copy for classroom use

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

Answer key — American Inventors and Their Ideas