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Unknown Type
Khan Academy

Khan Academy: Use Arithmetic Sequence Formulas

For Students 9th - 10th Standards
Given the formula of an arithmetic sequence, either in explicit form or in recursive form, find a specific term in the sequence. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or...
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Unknown Type
Khan Academy

Khan Academy: Explicit Formulas for Arithmetic Sequences

For Students 9th - 10th Standards
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.
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Unknown Type
Khan Academy

Khan Academy: Recursive Formulas for Arithmetic Sequences

For Students 9th - 10th Standards
Find the recursive formula of an arithmetic sequence given the first few terms.
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eBook
Mathigon

Mathigon: Algebra: Special Sequences

For Students 9th - 10th Standards
In addition to arithmetic and geometric sequences, Fibonacci Numbers, and figurate numbers, there are countless interesting sequences that don't follow a similar, regular pattern. These include prime numbers, perfect numbers, the...
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Activity
Cool Math

Coolmath: Gauss's Problem and Arithmetic Series

For Students 6th - 9th
This algebra lesson explains Gauss's Problem and introduces arithmetic series.
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eBook
Math Planet

Math Planet: Geometric Sequences of Numbers

For Students 9th - 10th Standards
Gain an understanding of the geometric sequences of numbers by viewing an example and a video lesson.
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Activity
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Arithmetic Sequences

For Students 9th - 10th Standards
Find a quick, concise explanation of arithmetic sequences. The formula for the nth term and several examples are given to help you understand how to find the nth term of a variety of arithmetic sequences.
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Activity
Interactive Mathematics

Interactive Mathematics: Arithmetic Progressions

For Students 9th - 10th Standards
A description of an arithmetic series begins this demonstration, followed by formulas and examples. A real world application is included for practice.
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Unknown Type
Khan Academy

Khan Academy: Use Arithmetic Sequence Formulas

For Students 9th - 10th Standards
Given the formula of an arithmetic sequence, either in explicit form or in recursive form, find a specific term in the sequence.
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Unknown Type
University of Vienna (Austria)

University of Vienna: Arithmetic or Geometric?

For Students 9th - 10th Standards
Interactive quiz in which the first few terms of a sequence are given, which then must be identified as an arithmetic or geometric sequence. After completion, the site returns a score to judge understanding of the different types of...
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Unknown Type
Khan Academy

Khan Academy: Extend Arithmetic Sequences

For Students 9th - 10th
Given the first few terms in an arithmetic sequence, find the next term in the sequence.
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Unit Plan
Texas A&M University

Wtamu Virtual Math Lab: College Algebra: Sequences

For Students 9th - 10th Standards
An introductory tutorial on sequences, complete with important definitions, example problems and step-by-step solutions, and several practice exercises for you to complete and check. Provides good explanations and examples of arithmetic,...
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Handout
Math Open Reference

Math Open Reference: Sequences

For Students 9th - 10th Standards
Learn about sequences with this handy reference guide. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
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Activity
Math Notes and Math Tests

Pre Calculus Note: Arithmetic Sequences and Partial Sums [Pdf]

For Students 9th - 10th Standards
The tutorial discusses sequences and series. Students learn about arithmetic sequences, geometric sequences, partial sums, and infinite geometric series. The resource consists of class notes and examples with solutions.
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Handout
National Council of Teachers of Mathematics

The Math Forum: Finding a Term of an Arithmetic Series

For Students 9th - 10th Standards
This site from the Math Forum contains a common question asked by students learning about arithmetic series which is answered by Dr. Math in a format that is understandable for all ages.
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Unit Plan
CK-12 Foundation

Ck 12: Analysis: Recursive Formulas

For Students 10th - 12th Standards
[Free Registration/Login may be required to access all resource tools.] This lesson provides a review of a variety of sequence types including recursive, arithmetic, and geometric. Students examine guided notes, review guided practice,...
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Finding and Completing Growth Pattern Sequences

For Students 3rd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] In this learning module, students must identify a simple pattern in a series of numbers and continue the pattern. Includes video demonstrating a sample problem...
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Unit Plan
Mangahigh

Mangahigh: Algebra: The Term to Term Rule

For Students 9th - 10th Standards
Students explore the concept of the term to term rule by working through an online tutorial and then attempting a ten question quiz that increases in difficulty as questions are answered correctly.
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Whiteboard
ClassFlow

Class Flow: Magic Squares

For Teachers 9th - 10th
[Free Registration/Login Required] Students solve arithmetic problems in sequences to create magic squares.
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Activity
Other

Interactive Stuff: Sequences

For Students 9th - 10th Standards
Work out the 4th, 5th, 10th, 20th, and nth terms in a number sequence.
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Unit Plan
Ministry of Education and Universities of the Region of Murcia (Spain)

Ministerio De Educacion Y Ciencia: Progresiones

For Students 9th - 10th Standards
This interactive unit introduces the concepts of arithmetic and geometric progression. It shows how to obtain the terms of a progression, its general term and the sum of the terms.
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Unit Plan
Khan Academy

Khan Academy: Sums of Consecutive Integers

For Students 7th - 8th
Practice finding the nth number in a sequence of consecutive numbers based on the sum. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
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Unit Plan
CK-12 Foundation

Ck 12: Analysis: Explicit Formulas

For Students 10th - 12th
[Free Registration/Login may be required to access all resource tools.] In this lesson students learn about explicit formulas for identifying terms of a sequence without knowing the preceding term. Students examine guided notes, review...
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Interactive
AAA Math

Aaa Math: Finding a Pattern

For Students 2nd - 5th
Find the missing number in a sequence.

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