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Inventors and Scientists is a free printable Grade 3 to Grade 5 social studies worksheet on how American inventors and scientists changed daily life, aligned to C3 Framework indicator D2.Eco.13.3-5. It prints 2 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 21 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.

Inventors and Scientists

D2.Eco.13.3-5

NameDate

Draw a line from each person to what they did.

1.Draw a line from each one to its match.
  • The Wright brothers
  • Eli Whitney
  • Willis Carrier
  • Jonas Salk
  • A.Invented the cotton gin, which made cotton profitable and spread slavery
  • B.Invented modern air conditioning
  • C.Developed a vaccine against polio
  • D.Made the first powered airplane flight in 1903
2.Draw a line from each one to its match.
  • Thomas Edison
  • Samuel Morse
  • Neil Armstrong
  • John James Audubon
  • A.Developed a long-lasting light bulb and the phonograph
  • B.Developed the telegraph and a code of dots and dashes
  • C.The first person to walk on the Moon, in 1969
  • D.Painted and described the birds of America

LessonPrint · D2.Eco.13.3-5 · Set 21 · free to copy for classroom use

Answer key — Inventors and Scientists

Set 21. Prints on its own sheet.

  1. 1.1. The Wright brothers — D (Made the first powered airplane flight in 1903) 2. Eli Whitney — A (Invented the cotton gin, which made cotton profitable and spread slavery) 3. Willis Carrier — B (Invented modern air conditioning) 4. Jonas Salk — C (Developed a vaccine against polio)
  2. 2.1. Thomas Edison — A (Developed a long-lasting light bulb and the phonograph) 2. Samuel Morse — B (Developed the telegraph and a code of dots and dashes) 3. Neil Armstrong — C (The first person to walk on the Moon, in 1969) 4. John James Audubon — D (Painted and described the birds of America)

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