Introduction

A formula is a tool, or a set of instructions, for solving a problem. To solve a formula, you substitute numbers for the letters, or variables, and do the operations. In this lesson, you will learn how to solve formulas and when to use specific formulas. Remember, your formula sheet is a great tool. You can also use it when you take your official GED test!

Objectives

When you complete this lesson you will:

q Solve formulas by substitution.

q Solve formulas by isolating the variable.

q Apply perimeter, circumference, area, and volume formulas to solve real-life problems.

Learning Activities

1. Video:

a. Watch Program 34 where workers and students demonstrate how to use formulas.

b. As you watch, look for ways that people use formulas on the job.

2. Workbook:

a. Read pages 149-152 and complete the “Sneak Preview.”

b. Read page 153. Then complete and correct the exercises on pages 154-165 about using formulas to solve problems, using the GED Formulas page, solving for other variables, and using geometry formulas.

c. Complete and correct the “GED Practice” on pages 166-168. This section is similar to the GED Math Test.

3. Internet:

a. Log onto your Home Space at http://litlink.ket.org and follow the links to GED Connection, Math.

b. Under Learning Modules, open “Unit 4: Saving money on your energy bills”

c. Complete Activities 1-8. (NOTE: Be sure to click on “Save” after you type in the boxes after each activity.)

Learning on the Go! With The Literacy Project

for more information contact:

Sharon Feeney

Distance Learning Coordinator

15 Bank Row

Suite C

Greenfield, MA 01301

413-774-3934 x14