Education Technology

Arithmetic Sequences & Series

Updated on 02/06/2015

Activity Overview

Students use formulas to find the differences of the consecutive terms, plot a scatter plot of each sequence, and determine that sequences with common differences (called arithmetic sequences) have scatter plots whose points form a straight line.

Key Steps

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    In problem one, students will use formulas to find the differences of the consecutive terms of a sequence. 

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    Then, students will plot a scatter plot of each sequence and determine that sequences with common differences, also called arithmetic sequences, have scatter plots that form a straight line.

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    In problems two and three, students generate a sequence and then find the sum of the first n terms of a sequence using a formula.