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 19 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
Daguerre's photographs, 1839
Ford's moving assembly line, 1913
Morse's telegraph, 1844
A.Messages crossed long distances in minutes instead of weeks
B.Milk and other foods became safer and stayed fresh longer
C.Families could keep true pictures of people for the first time
D.Cars became cheap enough for many families to buy
2.Draw a line from each one to its match.
Salk's polio vaccine, 1955
McCormick's reaper, 1831
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.Farmers harvested much more grain with fewer workers
C.Cotton was cleaned faster, and slavery spread as planters grew more cotton
D.Children were protected from a disease that could leave them unable to walk
LessonPrint · D2.Eco.13.3-5 · Set 19 · free to copy for classroom use
Answer key — Inventions That Changed Communities
Set 19. Prints on its own sheet.
1.1. Pasteur's heating method, 1860s — B (Milk and other foods became safer and stayed fresh longer) 2. Daguerre's photographs, 1839 — C (Families could keep true pictures of people for the first time) 3. Ford's moving assembly line, 1913 — D (Cars became cheap enough for many families to buy) 4. Morse's telegraph, 1844 — A (Messages crossed long distances in minutes instead of weeks)
2.1. Salk's polio vaccine, 1955 — D (Children were protected from a disease that could leave them unable to walk) 2. McCormick's reaper, 1831 — B (Farmers harvested much more grain with fewer workers) 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 — C (Cotton was cleaned faster, and slavery spread as planters grew more cotton)
Last reviewed 2026-09-05. Aligned to D2.Eco.13.3-5 of the C3 Framework for Social Studies State Standards.