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 started a hair-care business and trained thousands of sales agents?

A.Madam C. J. Walker
B.Samuel Morse
C.Jonas Salk

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

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

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

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

4.Who helped create early computer programming languages?

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

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

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

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

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

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

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

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

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

LessonPrint · D2.Eco.13.3-5 · Set 12 · 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