Module 2 Lesson 1

In this module you will review patterns and sequences

Module 2 - Lesson 1

Formula: an = a1 • r n-1

Formula: an = a1 + (n-1)d

Example: 2, 4, 6, 8...

Example: 1, 7, 49, 343, … is a geometric sequence that has a ratio of 7/1 between consecutive terms; each term after the first term can be found by multiplying the previous term by a constant, in this case the number 7 or 7/1

Example: 1, 7, 13, 19, … is an arithmetic sequence as it has a constant difference of +6 (i.e., 6 is added over and over)

Geometric Sequence - An ordered list of numbers that has the same ratio between consecutive terms.

Pattern - A set of numbers arranged in order (or in a sequence). The numbers and their arrangement are determined by a rule, including repetition and growth/decay rules.

Arithmetic Sequence - An ordered list of numbers that increases or decreases at a constant rate (i.e., the difference between numbers remains the same).

Lesson 1 - Patterns and Sequences

Lesson 1 - Patterns and Sequences

-1, 4, 9, 14,...

Lesson 1 - Patterns and Sequences

Algebra 1 Keystone Example Test

Scoring Guidelines for Constructed Response

Keystone Four Function Calculator

Keystone Graphing Calculator

Keystone Formula Sheet

Keystone Resources

Here are resources to help support you through this module and prepare you for the Keystone exam.

Algebra 1 Keystone Example Test

Scoring Guidelines for Constructed Response

Keystone Four Function Calculator

Keystone Graphing Calculator

Keystone Formula Sheet

Keystone Resources

Here are resources to help support you through this module and prepare you for the Keystone exam.

Algebra 1 Keystone Example Test

Scoring Guidelines for Constructed Response

Keystone Four Function Calculator

Keystone Graphing Calculator

Keystone Formula Sheet

Keystone Resources

Here are resources to help support you through this module and prepare you for the Keystone exam.

Algebra 1 Keystone Example Test

Scoring Guidelines for Constructed Response

Keystone Four Function Calculator

Keystone Graphing Calculator

Keystone Formula Sheet

Keystone Resources

Here are resources to help support you through this module and prepare you for the Keystone exam.