Fraction Conversion 2 (with percents)

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Students will learn how to convert fractions, decimals, and percents using a computer applet. This is a follow-up lesson to Fraction Conversion.


Upon completion of this lesson, students will:

  • practice converting fractions, decimals, and percentages
  • understand the numeric value of various equivalent representations simple fractions, decimals, and percentages

Standards Addressed:

Textbooks Aligned:

Student Prerequisites

  • Technological: Students must be able to:
    • perform basic mouse manipulations such as point, click and drag
    • use a browser for experimenting with the activities
  • Arithmetic: Students must be able to:
    • convert between fractions and decimals

Teacher Preparation

Students will need:

  • access to a browser
  • pencil and paper

Key Terms

decimalShort for the term "decimal fraction", a decimal is another way to represent fractional numbers. The decimal uses place value to express the value of a number as opposed to a fraction that uses a numerator and denominator.
fractionA rational number of the form a/b where a is called the numerator and b is called the denominator
percentA ratio that compares a number to one hundred. The symbol for percent is %

Lesson Outline

  1. Focus and Review:

    • Remind students what they learned about converting between fractions and decimals.
    • Lead into lesson by asking students if they know of another way of representing fractional amounts besides fractions and decimals.

  2. Objectives

    Let the students know what it is they will be doing and learning today. Say something like this:

    • Today we will be learning about percents and how to convert fractions, decimals, and percentages.

  3. Teacher Input

    • Lead a discussion on percents.
    • Ask students how they think you should convert from fractions or decimals into percentages.
    • After discussing different possible methods, explain to students that you can convert to percentages by converting to a fraction over 100, and just using the numerator with the percent sign: %.

  4. Guided Practice

    • Open the Fraction Four applet in a browser.
    • Select the fraction to decimal and fraction to percentage problems.
    • Guide students through playing the game.

  5. Independent Practice

  6. Closure

    • Discuss why conversions from fractions to percentages and decimals are important in real life situations.
    • Review the steps used to convert from fractions to percentages and decimals.

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