Sigma

High school (ages 12+)
Mathematics & Numbers

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/sigma

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 alphabetical rank?Sigma is the 18th letter of the Greek alphabet
2. What is the greek numeral value?Sigma represented the numerical value of 200
3. What is Sigma in the Greek alphabet?Sigma is the eighteenth letter of the Greek alphabet. It is written as Σ in uppercase, and as σ or ς in lowercase.
4. Why does Sigma have two lowercase forms?The lowercase σ is used inside words, while a special final form ς is used only at the end of words. This helps people read Greek words correctly.

Greek Alphabet: An ancient alphabet originating in Greece, foundational to Western languages and mathematics.
Final Sigma (ς): A specialized lowercase form of the Greek letter sigma used exclusively at the end of words.
Summation Notation (Σ): A mathematical symbol representing the operation of adding a sequence of numbers or expressions.
Paleography: The study of ancient writing and scripts, including the evolution of letter forms.