Inventions That Changed Communities is a free printable Grade 3 to Grade 5 social studies worksheet on how an invention changed work and 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 25 of 25 · the same problems every time you open this link.
Set 1 has all 25 in a single PDF. All 25 sets ask different questions.
Inventions That Changed Communities
D2.Eco.13.3-5
NameDate
Draw a line from each invention to the change it made.
1.Draw a line from each one to its match.
Pasteur's heating method, 1860s
McCormick's reaper, 1831
Ford's moving assembly line, 1913
The Wright brothers' airplane, 1903
A.Cars became cheap enough for many families to buy
B.Farmers harvested much more grain with fewer workers
C.Milk and other foods became safer and stayed fresh longer
D.People could travel by powered flight
2.Draw a line from each one to its match.
Whitney's cotton gin, 1793
Salk's polio vaccine, 1955
Morse's telegraph, 1844
Edison's electric light bulb, 1879
A.Children were protected from a disease that could leave them unable to walk
B.Messages crossed long distances in minutes instead of weeks
C.Homes and streets could be lit without flames
D.Cotton was cleaned faster, and slavery spread as planters grew more cotton
LessonPrint · D2.Eco.13.3-5 · Set 25 · free to copy for classroom use
Answer key — Inventions That Changed Communities
Set 25. Prints on its own sheet.
1.1. Pasteur's heating method, 1860s — C (Milk and other foods became safer and stayed fresh longer) 2. McCormick's reaper, 1831 — B (Farmers harvested much more grain with fewer workers) 3. Ford's moving assembly line, 1913 — A (Cars became cheap enough for many families to buy) 4. The Wright brothers' airplane, 1903 — D (People could travel by powered flight)
2.1. Whitney's cotton gin, 1793 — D (Cotton was cleaned faster, and slavery spread as planters grew more cotton) 2. Salk's polio vaccine, 1955 — A (Children were protected from a disease that could leave them unable to walk) 3. Morse's telegraph, 1844 — B (Messages crossed long distances in minutes instead of weeks) 4. Edison's electric light bulb, 1879 — C (Homes and streets could be lit without flames)
Last reviewed 2026-09-05. Aligned to D2.Eco.13.3-5 of the C3 Framework for Social Studies State Standards.