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 24 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.
Edison's electric light bulb, 1879
Pasteur's heating method, 1860s
Carver's farming research, early 1900s
Whitney's cotton gin, 1793
A.Southern farmers learned to rotate crops like peanuts to restore the soil
B.Homes and streets could be lit without flames
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.
McCormick's reaper, 1831
Bell's telephone, 1876
Ford's moving assembly line, 1913
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.People could talk to each other over long distances
D.Farmers harvested much more grain with fewer workers
LessonPrint · D2.Eco.13.3-5 · Set 24 · free to copy for classroom use
Answer key — Inventions That Changed Communities
Set 24. Prints on its own sheet.
1.1. Edison's electric light bulb, 1879 — B (Homes and streets could be lit without flames) 2. Pasteur's heating method, 1860s — C (Milk and other foods became safer and stayed fresh longer) 3. Carver's farming research, early 1900s — A (Southern farmers learned to rotate crops like peanuts to restore the soil) 4. Whitney's cotton gin, 1793 — D (Cotton was cleaned faster, and slavery spread as planters grew more cotton)
2.1. McCormick's reaper, 1831 — D (Farmers harvested much more grain with fewer workers) 2. Bell's telephone, 1876 — C (People could talk to each other over long distances) 3. Ford's moving assembly line, 1913 — B (Cars became cheap enough for many families to buy) 4. Salk's polio vaccine, 1955 — A (Children were protected from a disease that could leave them unable to walk)
Last reviewed 2026-09-05. Aligned to D2.Eco.13.3-5 of the C3 Framework for Social Studies State Standards.