Yale University
Solving Problems by the Hundreds
This site contains a study of percentage and its applications in the study of consumer related problems. Problems involving sales tax are included. Examples, explanation, solutions and a bibliography are also included in the site.
AAA Math
Aaa Math: Fractions
A simple introduction to fractions with pictures of fourths and practice games to review the concept.
Yale University
Yale New Haven Teachers Institute: Solving Problems "By the Hundreds"
The Yale-New Haven Teachers Institute site contains various math exercises relating to percentage and consumer-related problems. An explanation of sales tax, a related problem and answer are given.
Beacon Learning Center
Beacon Learning Center: Flowering Fractions
An interactive web lesson teaches students about fraction concepts such as equivalent and equal parts.
Mangahigh
Mangahigh: Number: Common Fractions
Conert fractions, decimals, and percents to their equivalent forms.
NumberNut
Number Nut: Breaking Down Fractions
Discover fractions in the world around us in this lesson that also examines how fractions are divided. Detailed examples and pictures presented to explain this concept along with key vocabulary. A brief introduction to problem solving...
University of Cambridge
University of Cambridge: Nrich: Red Balloons, Blue Balloons
Use your problem solving skills to help Katie and Will solve the problem they have with blowing up their balloons until they pop. See if you can discover the solution on your own at this one page website. Then check the solution...