Education Technology

Arithmetic Sequences & Series

Published on 09/05/2012

Activity Overview

Use formulas to find the differences of the consecutive terms, plot a scatter plot of each sequence, and determine the shape of sequences with common differences. Then use a spreadsheet to display the first n terms and find the sum.

Key Steps

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    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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    Students will find the sum of the first n terms of a sequence using a formula and using sigma notation.