Students review their physical models of the objects on their playground at school. Using the model, they convert it into a map with a scale and key. To end the lesson, they use the map to locate different objects and measure the...

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.

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

[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.

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

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...