Mangahigh is a website with math games aimed at twelve to eighteen year olds. On this site students form and use the formula for direct variation.

MathWorld offers a concise mathematical definition of direct variation or direct proportion.

Acquire a deeper understanding of the concept of proportionality. Concise definitions, detailed examples, and an interactive worksheet to apply what you have learned.

The student will use a variety of methods inculding tables, equations and graphs to find the constant of variation and missing values when given a relationship that varies directly.

[Free Registration/Login may be required to access all resource tools.] Students will write, graph, and solve direct variation models for real-world problems. Students examine guided notes, review guided practice, study vocabulary, watch...

Practice using your graphing calculator for solving proportion problems. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each problem.

Practice using your graphing calculator for proportion problems. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each problem.

[Free Registration/Login may be required to access all resource tools.] Understand direct and inverse variation.

Jiskha.com offers math homework help that provides a general overview of direct and indirect variation, including a few simple graphing examples.

Gives examples of ratios and proportions and how to solve them.

The discussion examines direct variation. Students learn about the math concept through definitions and sample exercises.

Practice using your graphing calculator for similarity and proportion problems. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each problem.

Puppies prove to be a fun and useful aid in this adorable experiment! By having access to, and measuring a puppy's body dimensions over a period of weeks or months, you can discover if segments of canine anatomy develop at different...

In Spanish. In this unit you will practice proportion. You will be able to distinguish whether quantities are or not in proportion and solve problems of direct and indirect proportion.

Hooke's law says that the opposing force of a spring is directly proportional to the amount by which the spring is stretched. How accurately Hooke's law describe the behavior of real springs? Can springs be used to make accurate scales...

[Free Registration/Login Required] In this flipchart, students apply their understanding of ratio, percent, and direct proportion in various situations. Students solve problems involving ratio and proportion with similar figures and with...

[Free Registration/Login Required] In this flipchart, students apply ratio, percent, and direct proportion in situations. Students solve problems involving percentages such as percent increase/decrease, tax, commission, and discount.

Georg Simon Ohm had humble roots and struggled financially throughout most of his life, but the German physicist is well known today for his formulation of a law, termed Ohm's law, describing the mathematical relationship between...

In this activity, students study Hooke's Law. They understand that stretch on a spring is directly proportional to the force applied to the end of the string. Students observe a spring being stretched as candies are added to a cup...

Most driver's education classes teach future drivers that the stopping distance of a skidding car is directly proportional to the square of the speed of the car. See how this situation plays out in this animation.

This collection of resources for children ages 3-8 are drawn from the public television series Let's Learn, a partnership between the WNET Group and the New York City Department of Education. Let's Learn aims to provide our young...

Here is a site that clearly and thoroughly explains direct and inverse variation. There are example problems solved, problems for the student to attempt, and answers to the student problems. Point this site out to students who have been...

[Free Registration/Login may be required to access all resource tools.] Graph, write, and solve inverse variations.

The Asian population of Africa is a small but significant minority. Whereas there have been Asians, primarily merchants, who lived on the east coast of Africa for hundreds, if not thousands, of years, a great influx of Asians came to...