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## Use ratios and proportions to solve problems. SPI 0706.2.7

### Links verified on 6/11/2014

1. Algebra: Proportion Word Problems - explanation and examples [direct and inverse proportion explained]
2. All About Ratios - five-question multiple-choice quiz 3. All About Ratios - links to several lessons by Cynthia Lanius 4. 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.
5. Cat and Mouse: Direct and inverse proportion - The problem is actually a great opportunity to teach direct variation and inverse variation.
6. Comparing Ratios and Rates - five-question multiple-choice quiz 7. Determine the number based on the ratio - instruction and review, practice, and a quiz and 8. Determining the Ratio - instruction and review, practice, and a quiz and 9. Dirt Bike Proportions - a multi player tug of war game for proportions 10. Figure This: Math Challenge for Families - proportional reasoning
11. Interpreting and Applying Proportions - five-question multiple-choice quiz 12. Learning ratios and proportions through scale drawings - a text lesson plan 13. Nutshell Math: Ratios and Proportion - video lesson with examples and sample problems 14. Practice with Ratios - ten question quiz, answers and explanations are available from drop down boxes 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. Ratio Stadium - a multi player racing game for ratios 27. Ratios - a six page module from Purple Math
28. Ratios and Proportions - an interactive lesson in a slide show format 29. Ratios and Proportions - an 18 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. 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.]
31. Reduce Ratios to Lowest Terms - interactive quiz - instruction and review, practice, and a quiz and 32. Review of Proportion - examples and practice problems
33. Review of Ratios - examples and practice problems
34. Spy Guys Interactive - Ratio - Video Lesson 35. Teaching Ratios and Proportions - suggestion for teachers and parents
36. Using Proportions - five-question multiple-choice quiz  Internet4classrooms is a collaborative effort by Susan Brooks and Bill Byles. 