Website
Ducksters

Ducksters: Kids Math: Ratios, Fractions, and Percentages

For Students 3rd - 8th Standards
This page explores how ratios can be written as fractions. The site also discusses proportions and reducing ratios with problems and examples.
Activity
Texas Instruments

Texas Instruments: Factors Galore A: Common Factors

For Teachers 6th - 8th
Students practice simplifying fractions in a game format by dividing the numerator and denominator by the greatest common factor.
Activity
Texas Instruments

Texas Instruments: Factors Galore B: Get the Low Down

For Teachers 6th - 8th
In this activity, students practice simplifying fractions in a game format by dividing the numerator and denominator by the greatest common factor.
Handout
The Math League

The Math League: Decimals, Whole Numbers and Exponents

For Students 4th - 8th
This tutorial has definitions and examples of decimals, whole numbers, and exponents. In addition, a variety of topics are covered, such as comparing, multiplying and subtracting.
Website
Discovery Education

Discovery Education: Web Math: General Math

For Students 3rd - 8th
An extraordinary site that will help you with your math homework. Presented in a format that is both easy to understand and educational. Navigate through numerous instant-answer, self-help math solvers to help you figure out your math...
Interactive
Doina Popovici

Math Play: Math Magician Simplest Form Game

For Students 4th - 6th
Make the bunny disappear by reducing fractions to their simplest form in this game.
Handout
Paul Dawkins

Paul's Online Notes: Algebra: Preliminaries: Rational Expressions

For Students 9th - 10th Standards
Detailed math tutorial features notes and examples that define rational expressions and investigate how to reduce a rational expression to lowest terms, add, subtract, multiply, and divide rational expressions.
Interactive
Instituto Latinoamericano de la Comunicacion Educativa

Red Escolar: Laberinto De Fracciones

For Students 3rd - 8th Standards
Practice simplifying fractions by playing a fraction domino game.
Interactive
Calculator Soup

Calculator Soup: Ratio to Fraction Calculator

For Students 9th - 10th Standards
Convert ratios to fractions. The ratio to fraction calculator finds fraction equivalents of ratio terms and reduces the fractions to simplest form.
Graphic
Curated OER

Low Terms

For Students 3rd - 8th
Practice finding the lowest term name for a variety of different fractions using a number line.
Lesson Plan
Better Lesson

Better Lesson: Simplest Form

For Teachers 4th
Given a set of equations students will be able to explain how to reduce fractions to simplest form and determine if the given set of fractions are equivalent.
Unknown Type
Houghton Mifflin Harcourt

Houghton Mifflin Harcourt: Saxon Activity Center: Graphing Calculator Activity: Proportions [Pdf]

For Students 9th - 10th
A concise graphing calculator lesson on proportions. Detailed examples, demonstrations of functions, and practice problems included. Acrobat Reader required.
Unit Plan
Education Development Center

Tune in to Learning: Math Lesson Working With Ratios

For Students 2nd - 5th
Did you know that chefs must know how to use ratios in order to prepare meals? Learn the value of understanding how to write ratios, ratio proportionality, and ratios in lowest terms in this interactive lesson. Based on real world...
Graphic
Curated OER

Visual Fractions:strict Fraction Subtraction With Circles

For Students 3rd - 8th
Use this interactive site from Visual Fractions to practice subtraction with fractions using circles. You will need to answer the questions with mixed numbers in lowest terms.
Graphic
Curated OER

Visual Fractions:strict Fraction Subtraction With Circles

For Students 3rd - 8th
Use this interactive site from Visual Fractions to practice subtraction with fractions using circles. You will need to answer the questions with mixed numbers in lowest terms.
Activity
AAA Math

Aaa Math: How to Determine a Ratio

For Students 6th - 8th Standards
Learners practice writing ratios in lowest terms. The resource consists of a tutorial and self-check practice problems.
Graphic
Curated OER

Lowest Terms With Circles

For Students 3rd - 8th
Practice finding the lowest term name for a variety of different fractions using circles.
Unknown Type
AAA Math

Aaa Math: Ratios

For Students 3rd - 8th Standards
This short exercise gives the student a ratio in reduced terms, and then gives the students a replacement value for one part of the ratio. The student is then to input the other part of the replacement ratio so as to keep the two ratios...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Multiplying Mixed Numbers Word Problems

For Students 4th - 5th Standards
[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to solve word problems where they must multiply mixed numbers by first converting them to improper fractions,...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Multiplying Two Mixed Numbers

For Students 4th - 5th Standards
[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to multiply two mixed numbers by first converting them to improper fractions, multiplying, then reducing the product to...
Unknown Type
Math Slice

Math Slice: Fraction Slice Special Test

For Students 3rd - 8th Standards
A succinct tool for assessing decimal and fraction concepts. Assessment is scored online. An excellent tool for use as a quick assessment.
Activity
Teaching Treasures Publications

Teaching Treasures: Year Five Math (Page 3)

For Students 3rd - 8th Standards
An interactive worksheet that focuses on adding and subtracting fractions. The worksheet covers concepts such as mixed numbers, reducing to lowest terms, and changing mixed numbers to improper fractions. Problems are set up horizontally...
Activity
Help Algebra

Help algebra.com: Simplifying Rational Expressions

For Students 9th - 10th Standards
The process of factoring and canceling is used to simplify, multiply, and divide rational expressions. Adding and subtracting rational expressions is also demonstrated, including finding common denominators.
Website
National Council of Teachers of Mathematics

The Math Forum: Height to Weight Ratio

For Students 3rd - 8th Standards
A student asks Dr. Math, "If I have a friend that weighs 155 pounds and is five feet, four inches tall, what is his height-to-weight ratio?" Find out how Dr. Math solves this problem and get a better understanding of the concept of ratio.

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