## Lesson: Interpreting Equations

Developing the Concept

As your students master the meaning of equations, introduce the idea of a variable. The idea that a symbol, such as a letter, can be part of an equation or expression may take some getting used to. Provide many examples.

**Materials:** overhead projector or chalkboard on which to write

**Preparation:** Write the equation **5 + 7 = 12** on the board or overhead projector.

**Wrap-Up and Assessment Hints**

Students need significant practice with equations. Assess student progress by providing them with problem sets such as

3 + 8 = 4 +n

3 +n= 4 + 7

n+ 8 = 4 + 7

3 + 8 = 4 + 7

The goal is for students to understand the concept that the expression on the right side of an equation equals the expression on the left side and that more than one addend can be on each side. This is an important concept and worth taking extra time to develop.