# Lesson Plan: Sum of a Finite Geometric Sequence Mathematics

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to calculate the sum of the terms in a geometric sequence with a finite number of terms.

#### Objectives

Students will be able to

• recall the formula for the sum of a finite geometric sequence,
• calculate the sum of a specified number of terms in a geometric sequence when given
• the first three (or more) terms of the sequence and the total number of terms,
• the first three (or more) terms of the sequence and the last term,
• any numbered term and the common ratio,
• any numbered term and the sum of two or more numbered terms,
• calculate the number of terms in a geometric sequence when given its sum and any sufficient information,
• find a geometric sequence when given
• the sum of and the number of terms,
• the sum of two groups of numbered terms,
• the sum of more than two terms and the common ratio,
• the sum and the first and last terms.

#### Prerequisites

Students should already be familiar with

• properties of geometric sequences.

#### Exclusions

Students will not cover

• nongeometric sequences,
• the sum of an infinite sequence.

Attend sessions, chat with your teacher and class, and access class-specific questions. Download the Nagwa Classes app today!

Windows macOS Intel macOS Apple Silicon