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 4 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.
Morse's telegraph, 1844
Ford's moving assembly line, 1913
McCormick's reaper, 1831
The Wright brothers' airplane, 1903
A.Farmers harvested much more grain with fewer workers
B.People could travel by powered flight
C.Messages crossed long distances in minutes instead of weeks
D.Cars became cheap enough for many families to buy
2.Draw a line from each one to its match.
Whitney's cotton gin, 1793
Carver's farming research, early 1900s
Salk's polio vaccine, 1955
Bell's telephone, 1876
A.Children were protected from a disease that could leave them unable to walk
B.People could talk to each other over long distances
C.Cotton was cleaned faster, and slavery spread as planters grew more cotton
D.Southern farmers learned to rotate crops like peanuts to restore the soil
LessonPrint · D2.Eco.13.3-5 · Set 4 · free to copy for classroom use
Answer key — Inventions That Changed Communities
Set 4. Prints on its own sheet.
1.1. Morse's telegraph, 1844 — C (Messages crossed long distances in minutes instead of weeks) 2. Ford's moving assembly line, 1913 — D (Cars became cheap enough for many families to buy) 3. McCormick's reaper, 1831 — A (Farmers harvested much more grain with fewer workers) 4. The Wright brothers' airplane, 1903 — B (People could travel by powered flight)
2.1. Whitney's cotton gin, 1793 — C (Cotton was cleaned faster, and slavery spread as planters grew more cotton) 2. Carver's farming research, early 1900s — D (Southern farmers learned to rotate crops like peanuts to restore the soil) 3. Salk's polio vaccine, 1955 — A (Children were protected from a disease that could leave them unable to walk) 4. Bell's telephone, 1876 — B (People could talk to each other over long distances)
Last reviewed 2026-09-05. Aligned to D2.Eco.13.3-5 of the C3 Framework for Social Studies State Standards.