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Hear from an expert about the importance of the practice and what is needed for its successful implementation.
Video
Ratio, Rate, Proportion Problems
Fractions > Ratio, Rate, Proportion > Learn What Works
Dr. Lewis demonstrates how to work through two examples of problems involving ratios. Related Files: Ratio, Rate, and Proportion Problems (Sample Material)
Resource Type
Expert Interview
1542
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Video
Learning to Think Proportionally
Fractions > Ratio, Rate, Proportion > Learn What Works
Dr. James Lewis discusses what it means to think proportionally and offers examples from everyday contexts. He describes the conceptual progression toward working with cross-multiplication and...
Resource Type
Expert Interview
1391
views
