# Lesson Plan: One-step Equations: Addition and Subtraction Mathematics • 6th Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to write and solve one-step addition and subtraction equations in ℕ and ℤ.

#### Objectives

Students will be able to

• deduce the additive property of equality, which states that if the same amount is added to each side of an equation, the equality is still true,
• deduce the subtraction property of equality, which states that if the same amount is subtracted from each side of an equation, the equality is still true,
• know that solving a one-step equation means finding the unknown value to make the statement true.

#### Prerequisites

Students should already be familiar with

• the properties of operations in and ,
• the terms variable and constant.

#### Exclusions

Students will not cover

• equations with more than one solution,
• equations with more than one unknown,
• solving equations of the second or third degree.