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 15 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
Ford's moving assembly line, 1913
Whitney's cotton gin, 1793
Salk's polio vaccine, 1955
A.Children were protected from a disease that could leave them unable to walk
B.Cars became cheap enough for many families to buy
C.Milk and other foods became safer and stayed fresh longer
D.Cotton was cleaned faster, and slavery spread as planters grew more cotton
2.Draw a line from each one to its match.
Bell's telephone, 1876
McCormick's reaper, 1831
Morse's telegraph, 1844
Fulton's steamboat, 1807
A.Boats could travel upriver against the current
B.Farmers harvested much more grain with fewer workers
C.Messages crossed long distances in minutes instead of weeks
D.People could talk to each other over long distances
LessonPrint · D2.Eco.13.3-5 · Set 15 · free to copy for classroom use
Answer key — Inventions That Changed Communities
Set 15. Prints on its own sheet.
1.1. Pasteur's heating method, 1860s — C (Milk and other foods became safer and stayed fresh longer) 2. Ford's moving assembly line, 1913 — B (Cars became cheap enough for many families to buy) 3. Whitney's cotton gin, 1793 — D (Cotton was cleaned faster, and slavery spread as planters grew more cotton) 4. Salk's polio vaccine, 1955 — A (Children were protected from a disease that could leave them unable to walk)
2.1. Bell's telephone, 1876 — D (People could talk to each other over long distances) 2. McCormick's reaper, 1831 — B (Farmers harvested much more grain with fewer workers) 3. Morse's telegraph, 1844 — C (Messages crossed long distances in minutes instead of weeks) 4. Fulton's steamboat, 1807 — A (Boats could travel upriver against the current)
Last reviewed 2026-09-05. Aligned to D2.Eco.13.3-5 of the C3 Framework for Social Studies State Standards.