The lessons and materials available here come from a variety of sites and organizations. Some include offers for video or software, and some are lesson plans. Where the originals are Claris or Acrobat (PDF) documents, we have for the most part converted them to HTML, leaving a link back to the parent page from which you can download the formatted version.
The meaning of 'numerator', denominator', 'proper' and 'improper' fraction, 'greatest common factor' (GCF), fraction in lowest terms', 'least common multiple' (LCM).
Covers Identification, Factoring Integers, Reducing Fractions, Multiplication, Division, Building Fractions, Addition, Subtraction, and Order of Operations.
A site with Java programs that provide instruction and practice in identifying and renaming fractions, adding and subtracting fractions, mulitplying and dividing fractions, and comparing fractions.
From a series of 18 15-minute videos. To solve a series of problems that arise when they go into the pizza selling business, students learn how to multiply fractions. A designer of television and movie sets describes how multiplying fractions and mixed numbers helps him measure and build precisely.
A site with Java programs that provide instruction and practice in identifying and renaming fractions, adding and subtracting fractions, mulitplying and dividing fractions, and comparing fractions.
From a series of 18 15-minute videos. Using a game show format, students learn how to subtract mixed numbers. The show's host explains the steps involved: common denominators, regrouping, and subtracting only the numerators. Common mistakes are explained . A costume maker explains the importance of understanding subtraction of mixed numbers in his work.
From a series of 18 15-minute videos. To solve a series of problems that arise when they go into the pizza selling business, students learn how to multiply fractions. A designer of television and movie sets describes how multiplying fractions and mixed numbers helps him measure and build precisely.
A site with Java programs that provide instruction and practice in identifying and renaming fractions, adding and subtracting fractions, mulitplying and dividing fractions, and comparing fractions.
From a series of 18 15-minute videos. To solve a series of problems that arise when they go into the pizza selling business, students learn how to multiply fractions. A designer of television and movie sets describes how multiplying fractions and mixed numbers helps him measure and build precisely.
Young children (ages 6-7) learn to add fractions through graphing and partial sums, and about infinite series. A sample problem with answers from Chapter 1 of Don Cohen's worksheet book.
Pages that teach fractions using manipulatives: Taken in order, these lessons build on each other and reinforce basic knowledge of fractions. What are Cuisenaire Rods? Using Cuisenaire Rods to Name a Fraction; Identify the Numerator and Denominator; Least Common Denominator; Adding and Subtracting Fractions; Equivalent Fractions; Teacher Notes.
Mathematics from a Pineapple: Infinite sequences, limit of a sequence, ratios, fractions,and decimals. Also Looking at a Regular Pentagon. Sample problems from Chapter 7 of Don Cohen's book, Calculus By and For Young People.
Young children try writing the sum of an infinite series as a fraction. A sample problem from Chapter 3 of Don Cohen's book, Calculus By and For Young People.
Double and halve measuring fractions; halve mixed numbers with an even or odd whole number. Excerpt from the book Math to Build On by Johnny and Margaret Hamilton (1993).
Seven-year-olds add 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64 + ... forever! A sample problem from Chapter 1 of Don Cohen's book, Calculus By and For Young People.
Young children (ages 6-7) discover fractions by dividing cookies: 3 cookies between 2 people, 2 cookies among 3 people, etc. A sample problem from Chapter 2 of Don Cohen's book, Calculus By and For Young People.
Fractions
The Math Forum is a research and educational enterprise of the Drexel School of Education.
Introduction to Fractions