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 2 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.
Salk's polio vaccine, 1955
The Wright brothers' airplane, 1903
Edison's electric light bulb, 1879
McCormick's reaper, 1831
A.Farmers harvested much more grain with fewer workers
B.Children were protected from a disease that could leave them unable to walk
C.Homes and streets could be lit without flames
D.People could travel by powered flight
2.Draw a line from each one to its match.
Ford's moving assembly line, 1913
Pasteur's heating method, 1860s
Whitney's cotton gin, 1793
Carver's farming research, early 1900s
A.Cars became cheap enough for many families to buy
B.Southern farmers learned to rotate crops like peanuts to restore the soil
C.Milk and other foods became safer and stayed fresh longer
D.Cotton was cleaned faster, and slavery spread as planters grew more cotton
LessonPrint · D2.Eco.13.3-5 · Set 2 · free to copy for classroom use
Answer key — Inventions That Changed Communities
Set 2. Prints on its own sheet.
1.1. Salk's polio vaccine, 1955 — B (Children were protected from a disease that could leave them unable to walk) 2. The Wright brothers' airplane, 1903 — D (People could travel by powered flight) 3. Edison's electric light bulb, 1879 — C (Homes and streets could be lit without flames) 4. McCormick's reaper, 1831 — A (Farmers harvested much more grain with fewer workers)
2.1. Ford's moving assembly line, 1913 — A (Cars became cheap enough for many families to buy) 2. Pasteur's heating method, 1860s — C (Milk and other foods became safer and stayed fresh longer) 3. Whitney's cotton gin, 1793 — D (Cotton was cleaned faster, and slavery spread as planters grew more cotton) 4. Carver's farming research, early 1900s — B (Southern farmers learned to rotate crops like peanuts to restore the soil)
Last reviewed 2026-09-05. Aligned to D2.Eco.13.3-5 of the C3 Framework for Social Studies State Standards.