Mangahigh
Mangahigh: Algebra: Find the Nth Term of a Linear Sequence
Students explore an interactive tutorial on linear sequences and then practice their knowledge by attempting ten questions that increase in difficulty level.
Math Planet
Math Planet: Algebra 2: Geometric Sequences and Series
Gain an understanding of geometric sequences and series by viewing examples and a video lesson. [1:46]
Better Lesson
Better Lesson: Geometric Sequences and Series
Students will be able to make use of structure on their way to deriving a formula for the sum of a geometric series. They will also gain more experience in finding the nth term of a sequence/series. Includes short video. [1:15]
Khan Academy
Khan Academy: Finite Geometric Series
Evaluate finite geometric series given in sigma notation, recursively, or explicitly. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
CK-12 Foundation
Ck 12: Analysis: Sums of Infinite Geometric Series
[Free Registration/Login may be required to access all resource tools.] This lesson covers identifying infinite geometric series for which a sum can be determined, and finding the sum.
Khan Academy
Khan Academy: Recursive Formulas for Arithmetic Sequences
Find the recursive formula of an arithmetic sequence given the first few terms. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Algebra I: Recursive Formulas for Geometric Sequences
Find the recursive formula of a geometric sequence given the first few terms or given an explicit formula. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Algebra I: Explicit Formulas for Geometric Sequences
Solve problems such as: The first four terms in a geometric sequence are 1/3, 1, 3, and 9. Find an explicit formula for the sequence. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video...
Khan Academy
Khan Academy: Algebra I: Explicit Formulas for Arithmetic Sequences
Solve problems such as: The first four terms in an arithmetic sequence are 12, 5, -2, and -9. Find an explicit formula for the sequence. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
Khan Academy
Khan Academy: Converting Recursive and Explicit Forms of Geometric Sequences
Given the explicit formula of a geometric sequence, find its recursive formula, and vice versa. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Converting Recursive and Explicit Forms of Arithmetic Sequences
Given the explicit formula of an arithmetic sequence, find its recursive formula, and vice versa. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Math Planet
Math Planet: Geometric Sequences of Numbers
Gain an understanding of the geometric sequences of numbers by viewing an example and a video lesson.
Khan Academy
Khan Academy: Finite Geometric Series Word Problems
Here, students can practice solving word problems involving a finite geometric series. They receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
CK-12 Foundation
Ck 12: Analysis: Sums of Finite Geometric Series
[Free Registration/Login may be required to access all resource tools.] This lesson covers finding the sum of a geometric series using the formula and the calculator.
National Council of Teachers of Mathematics
Nctm: Illuminations: Limits
In this activity, you can see a representation of several geometric series and their limits.
Cuemath
Cuemath: Sequences
A comprehensive guide for learning all about sequences with definitions, the types of sequences, examples of sequences, formulas for sequences, solved examples, and practice questions.
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.
Wolfram Research
Wolfram Math World: Sequences
This MathWorld page provides links to various specific types of mathematical sequences and related links. This is a great resource if you are looking for very specific information.
ClassFlow
Class Flow: Patterns and Sequences
[Free Registration/Login Required] This brief flipchart provides hands-on practice for recognizing and identifying patterns and sequences.
Wolfram Research
Wolfram Math World: Geometric Sequence
This MathWorld site, an online training tool, provides a definition and an example of a geometric sequence and how it operates. Other math-related topics available.
Khan Academy
Khan Academy: Use Arithmetic Sequence Formulas
Given the formula of an arithmetic sequence, either in explicit form or in recursive form, find a specific term in the sequence.