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Arithmetic Sequences Intro

Sequences intro | Algebra (video) | Khan AcademySequences are ordered lists of numbers (called "terms"), like 2,5,8. Some sequences follow a specific pattern that can be used to extend them indefinitely. For example, 2,5,8 follows the pattern "add 3," and now we can continue the sequence. Sequences can have formulas that tell us how to find any term in the sequence. For example, 2,5,8,... can be represented by the formula 2+3(n-1).

Intro to arithmetic sequences | Algebra (video) | Khan AcademySal introduces arithmetic sequences and their main features, the initial term and the common difference. He gives various examples of such sequences, defined explicitly and recursively.

Extending arithmetic sequences | Algebra (video) | Khan AcademySal extends the arithmetic sequences -8, -14, -20, -26,... and 2, -1, -4, -7, -10,... to find their next terms.

Using arithmetic sequences formulas | Algebra (video) | Khan AcademySal finds terms of arithmetic sequences using their explicit and recursive formulas.

Extend arithmetic sequences | Algebra (practice) | Khan AcademyGiven the first few terms in an arithmetic sequence, find the next term in the sequence.

Below is an example of a screen shot proving that you’ve completed these problems (notice: it is usually timestamped at the time it was created, so I will know if you've submitted your own work)

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