Adding machine

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/adding-machine

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the scientific classification?Mechanical Calculator (Class of mechanical computing devices)
2. What is the key technological innovations?Gears, levers, carry mechanisms, printing capabilities for record-keeping
3. Who made the first adding machines?In the 1600s, inventors like Wilhelm Schickard and Blaise Pascal built early machines that could add and subtract. Their designs showed how gears could do math for us.
4. How did adding machines do a carry when adding numbers?When a gear turned all the way around, it pushed the next gear one step forward. This moved the next digit up, just like a carry in hand‑written addition.

Mechanical Computation: The process of performing calculations using physical, interconnected mechanical parts rather than electronic circuits.
Bookkeeping Automation: The use of machines or systems to streamline and record financial transactions, reducing manual effort and errors.
Predecessor Technology: A technology that existed before and influenced or led to the development of a later technology.