Education Technology

Introduction to Geometric Sequences

Published on 08/26/2010

Activity Overview

Students graphically analyze geometric series using graphs and consider the effect of the value for the common ratio and first term using sliders.

Key Steps

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    Students will explore geometric sequences graphically and numerically by varying the values of the common ratio. Clicking on the up or down arrow of the minimized slider while viewing a split screen of a graph and a spreadsheet makes this a dynamic activity.

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    Changing the values of both of the variables, first term and common ratio, of a geometric sequence gives students a deeper understanding of their behavior. A spreadsheet of the terms is available on page 3.2 to investigate the behavior numerically.