Arithmetic Sequences and Series

A series of free Calculus Video Lessons.

The following diagrams give the formulas for arithmetic sequence and arithmetic series. Scroll down the page for more examples and solutions.

Quick Introduction to Arithmetic Sequences
What is an arithmetic sequence?

Arithmetic Sequences
A Formula for the ' n-th ' Term
This video derives the formula to find the ‘n-th’ term of a sequence by considering an example.
The formula is then used to solve a few different problems.

Finding the Sum of a Finite Arithmetic Series
This video shows two formulas to find the sum of a finite arithmetic series.
The formulas are then used in some examples.

Try out our new and fun Fraction Concoction Game.

Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.

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