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## Solve problems using ratio quantities: velocity (measured in units such as miles per hour), density (measured in units such as kilograms per liter), pressure (measured in units such as pounds per square foot), and population density (measured in units such as persons per square mile). 0706.4.5

1. All About Ratios - a five question multiple-choice Quiz 2. All About Ratios - links to several lessons by Cynthia Lanius 3. All About Ratios: (Problem Solving) - A famous Texas chef has a secret recipe for her chili. When people ask her for it, she hands them a card with the complete recipe except for 1 detail. For the missing detail, she gives them a clue. Use ratios to discover the missing ingredient.
4. Comparing Ratios and Rates - a five question multiple-choice quiz 5. Determine the number based on the ratio - instruction and review, practice, and a quiz and 6. Determining the Ratio - instruction and review, practice, and a quiz and 7. Figure This: Math Challenge for Families - proportional reasoning
8. Interpreting and Applying Proportions - a five question multiple-choice quiz 9. Learning ratios and proportions through scale drawings - a text lesson plan 10. Nutshell Math: Ratios and Proportion - video lesson with examples and sample problems 11. Percentages and Proportions - a five question multiple-choice quiz 12. Percents and Ratios - an index of pages that teach percent and ratio skills covered in K8 math courses - Each page has an explanation, interactive practice and challenge games about percents and ratios. (from AAA math) - instruction and review, practice, and a quiz and 13. Percent with a Calculator - after the lesson there are problems to work 14. Practice with Ratios - ten question quiz with answers and explanations available in pull-down boxes [This expired page is brought to you by the Internet archive, the Wayback Machine.]
15. Proportion Practice Test - thirteen multiple choice questions, each question is on a separate page [This expired link is available through the Wayback Machine Internet Archive. If the page doesn't load quickly click on Impatient? at the bottom right of the page.] 16. Proportions and Ratios - good explanation of means and extremes from Free Math
17. Rags to Riches: Ratio and Proportion Quiz - quiz at Quia 18. Rates, Ratios, and Proportions - a two person quiz from Quia 19. Ratio/Proportion Problems from Ask Dr. Math - three pages of links to real-world problems
20. Ratio and Proportion - math review practice exercises 21. Ratio and Proportion - A proportion is a name we give to a statement that two ratios are equal. (This is a 3 step lesson followed by a workout.)
22. Ratio and Proportion - explanation and examples [This expired link is available through the Wayback Machine Internet Archive. If the page doesn't load quickly click on Impatient? at the bottom right of the page.]
23. Ratio and Proportion - introduction, in depth explanation, examples and a workout of ten problems 24. Ratio Exercises: Dolls : Camera] | Same ratio -- Fish : Atom | Different ratio -- Spider : Lizard | Different ratio -- Dots : Stars | 2 Dolls for every 1 Camera | 3 Atoms for every 2 Fish | [How Many Spiders do You Have? | Which Way Gives More Pizza? 25. Ratio Proportion Calculator - Enter the known and unknown values from your proportion problem. In classic algebraic format, place an x in the box where the value is unknown. Then select Calculate and click on it. 26. Ratios - a six page module from Purple Math
27. Ratios and Proportions - explanation with four sample problems 28. Ratios and Proportions - an interactive lesson in a slide show format 29. Ratios and Proportion Review - a 12 slide PowerPoint show [This expired link is available through the Wayback Machine Internet Archive. If the page doesn't load quickly click on Impatient? at the bottom right of the page.]
30. Review of Proportion - examples and practice problems
31. Review of Ratios - examples and practice problems
32. Spy Guys Interactive - Ratio - Video Lesson 33. Teaching Ratios and Proportions - suggestion for teachers and parents
34. Using Proportions - a five question multiple-choice quiz  Internet4classrooms is a collaborative effort by Susan Brooks and Bill Byles. 