Machines That Changed American Work is a free printable Grade 3 to Grade 5 social studies worksheet on how inventions raised productivity, and what might come next, aligned to C3 Framework indicator D2.Eco.13.3-5. It prints 3 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 11 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.
Machines That Changed American Work
D2.Eco.13.3-5
NameDate
Draw a line from each invention to what it changed. Then write your prediction.
1.Draw a line from each one to its match.
Refrigerated railroad car, 1870s
Mechanical reaper, Cyrus McCormick, 1831
Telephone, Alexander Graham Bell, 1876
Assembly line, Henry Ford, 1913
A.Carried fresh meat across the country without spoiling
B.Built cars step by step, cutting the time to make one
C.Let people talk to each other over long distances
D.Harvested wheat many times faster than by hand
2.Draw a line from each one to its match.
Telegraph, Samuel Morse, 1844
Steel plow, John Deere, 1837
Airplane, Wright brothers, 1903
Light bulb, Thomas Edison, 1879
A.Carried people and mail through the air
B.Let factories and homes keep working after dark
C.Cut through thick prairie soil so farmers could plant more land
D.Sent messages along wires in minutes instead of weeks
3.Choose one invention from this sheet and explain how it helped people produce more. Then predict an invention that could help farmers grow more food in the future.
I named an invention and what it changed.
I explained how it helped people produce more.
I described a future invention for farmers and how it would help.
LessonPrint · D2.Eco.13.3-5 · Set 11 · free to copy for classroom use
Answer key — Machines That Changed American Work
Set 11. Prints on its own sheet.
1.1. Refrigerated railroad car, 1870s — A (Carried fresh meat across the country without spoiling) 2. Mechanical reaper, Cyrus McCormick, 1831 — D (Harvested wheat many times faster than by hand) 3. Telephone, Alexander Graham Bell, 1876 — C (Let people talk to each other over long distances) 4. Assembly line, Henry Ford, 1913 — B (Built cars step by step, cutting the time to make one)
2.1. Telegraph, Samuel Morse, 1844 — D (Sent messages along wires in minutes instead of weeks) 2. Steel plow, John Deere, 1837 — C (Cut through thick prairie soil so farmers could plant more land) 3. Airplane, Wright brothers, 1903 — A (Carried people and mail through the air) 4. Light bulb, Thomas Edison, 1879 — B (Let factories and homes keep working after dark)
3.Names an invention from the sheet and explains how it helped people produce more, then predicts a believable future invention that would help farmers grow more food, with a reason.
Last reviewed 2026-09-05. Aligned to D2.Eco.13.3-5 of the C3 Framework for Social Studies State Standards.