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 invented a traffic signal and a breathing hood that helped rescuers?

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

2.Who helped create early computer programming languages?

A.Louis Daguerre
B.Grace Hopper
C.Cyrus McCormick

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

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

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

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

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

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

6.Who made the first successful powered airplane flights, in 1903?

A.Thomas Edison
B.Lewis and Clark
C.Wilbur and Orville Wright

7.Who developed a vaccine against polio in the 1950s?

A.Jonas Salk
B.Louis Daguerre
C.Henry Ford

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

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

LessonPrint · D2.Eco.13.3-5 · Set 3 · 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