Education Technology

Precalculus: Exploring Geometric Sequences

by Texas Instruments


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

  • Image

    For the first part of this activity, students explore geometric sequences graphically by varying the value of A, the common ratio. Pressing the right or left arrows will change the value of A and updates the graph each time.

  • Image

    Changing the values of both of the variables, the first term and common ratio, of a geometric sequence gives students a deeper understanding of their behavior.

  • Image

    As an extension, student will examine the derivation of the sum of a finite geometric series and use it to solve several problems.