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

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

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

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

3.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

4.Who announced a way to make photographs on metal plates in 1839?

A.Henry Ford
B.Louis Daguerre
C.George Washington Carver

5.Who helped create early computer programming languages?

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

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

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

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

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

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

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

LessonPrint · D2.Eco.13.3-5 · Set 24 · 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