Curated OER
Sigma Detectives
In this sigma worksheet, students evaluate patterns. They find the sum of the digits in a sequence and write the formula to produce the sequence. This one page worksheet contains four multi-step problems.
Purple Math
Purplemath: Sequences and Series: Terminology and Notation
Explains the basic terminology and notation of sequences and series, including summation symbols, subscripts, and indices.
Other
The Sigma Notation for Summation of Series
Conprehensive site explaining sigma notation. Site has many formulas and a few examples
Cool Math
Coolmath: Some Sigma Notation
This CoolMath resource will help students understand sequences and series. The symbol "sigma" is featue
Math Words
Math words.com: Sigma Notation
MathWords.com offers a very brief definition for sigma notation along with an example which illustrates what it is.